Two obscure Chemists stir up a fascination controversy in the lab but new tests challenge their hopes of
creating limitless energy.

by: Michael D. Lemonick

TIME Magazine, cover story

May 8, 1989, page 72-77.

Little more than a month ago, they were just two chemists, toilmg in virtual anonymity. But B.Stanley Pons and Martin Fleischmann came last week to Washington as heroes, visionaries and scientific superstars. With a mob of reporters following along, the thermodynamic duo marched onto Capitol Hill to tell Congress how their simple tabletop experiment had generated fusion, the nuclear reaction that powers the sun. Displaying slides filled with complex equations, wielding electron- ic pointers and pulling a mockup of their apparatus from a plastic shopping bag, the bespectacled researchers mesmerized the members of the House Committee on Science, Space and Technology with an account of how their device produced more energy, in the form of heat, than it consumed. The politicians may have been baf- fled by the chemistry, but they had no trouble grasping the implications. It seemed that Pons, a professor at the University of Utah, and Fleischmann, of Britain’s University of Southampton, might have pulled off a trick that has eluded some of the best minds in physics for nearly four decades. More important, they might have found a way to solve the world’s energy problems — for all time.

What would it take, they were asked, to make that dream a reality? Money from Congress, of course. University of Utah President Chase Peterson, who was right there at the scientists’ side, suggested that $25 million would be a nice sum to help his school set up a fusion research center. Some of the Congressmen appeared eager to oblige. ‘Today,” rhapsodized Robert Roe, a New Jersey Democrat, “we may be poised on the threshold of a new era. It is possible that we may be witness- ing the cold-fusion revolution.

But Congress had better wait a while before it starts pouring taxpayers’ money into Utah’s test tubes. Even as Pons and Fleischmann stirred excitement on Capitol Hill, evidence was mounting that their form of fusion is probably an illusion. More and more scientists were openly scoffing at the chemists’ claim that they had caused deuterium ions, which are commonly found in seawater, to fuse to form helium, liberating large amounts of heat. Physicists have never been able to achieve such a sustained reaction, even briefly, without subjecting deuterium to the kind of extreme temperature and pressure found inside the sun.

While no one has proved conclusively that Pons and Fleischmann are wrong, it seems likely that they jumped to a hasty conclusion based on incomplete research. Scientists in Japan and Switzerland announced that their own tests had convinced them the original work was flawed . .An attempt by the Harwell Laboratory in Britain to confirm the discovery has also produced nothing, even though Fleisch- mann himself checked the experiments.

None of the major national laboratories in the U.S. have obtained positive results either. This week data from one of the most comprehensive sets of experiments to date—a collaboration between Brookhaven National Laboratory and Yale University —will be presented at the spring meeting of the American Physical Society in Baltimore. The Brookhaven-Yale tests found no evidence of what Pons and Fleischmann saw. Brookhaven physicist Kelvin Lynn speculates that the heat produced may possibly be the result of some more conventional, though unexpected, chemical reaction. It’s quite interesting,” he says, “to wonder how nature may have conspired to make them believe they had fusion.”

Most damning of all is the editorial that appears in the current issue of the prestig-ious British journal Nature. The Pons-Fleischmann claim, writes editor John Maddox, “is literally unsupported by the evidence, could be an artifact [a spurious result unrelated to the phenomenon under investigation] and, given its improb-ability, is most likely to be one.” Maddox noted that the team announced its results before performing even the most basic control experiments to verify the findings.

 That was an “astonishing oversight,” wrote Maddox, “a glaring lapse from accepted practice.”

Those are strong words, but Pons and Fleischmann are hanging tough behind their - claim. Pons, in fact, says the experiments in his Utah lab have begun to produce increasing amounts of heat. And he has picked up a determined band of supporters. Robert Huggins, a respected materials scientist at Stanford, contends that he has s also obtained excess heat in a series of similar experiments. Says Huggins: “The magnitudes of our observed effects are comparable to those reported earlier by Fleischmann and Pons, and lend strong support to the validity of their results.”


Whether or not they turn out to be right, Pons and Fleischmann have pushed the entire scientific world into a frenzy. After the March 23 press conference in which the two chemists went public with their discovery, researchers around the globe immediately came down with fusion fever. Its symptoms were hyperactivity, insomnia and delusions of grandeur. Gleaning what meager information they could from murky faxes of an unpublished Pons-Fleischmann paper and from TV pictures of the apparatus, chemists and physicists dropped whatever else they were doing in attempts to verify or shoot down the concept of cold fusion.

Fusion (82K)

Thus began one of the strangest months in the history of science. Hardly a day passed without an announcement from somewhere—Texas, Georgia, Hungary, Brazil, India, the Soviet Union—that at least some parts of the Pons-Fleischmann experiment had been replicated. Scientific protocol went out the window as researchers everywhere called press conferences to began trumpet the latest results before verifying them.

 That turned out to be a dangerous course. The Georgia Institute of Technology, for example, claimed that its team had detected neutrons, a hallmark of fusion reactions, coming from a setup similar to the one Pons and Fleischmann had used. But then the scientists had to retract the assertion, admitting with embarrassment that they had been misled by a faulty neutron detector. And chemists at Texas A&M, who initially reported significant amounts of excess heat generated by their device, were disappointed when they got less heat in later experiments.

This new phenomenon of science by press conference disturbed many researchers. Said Moshe Gai, a Yale physicist and a member of the Yale-Brookhaven collaboration: “I am dissatisfied and somewhat disappointed with some of my fellow scientists who have done things too much in a hurry.” Charles C. Baker, director of fusion research at Argonne National Laboratory, was blunter: “Calling press conferences and making claims of results without having a well-prepared technical report is not the way for a good, professional scientist to function.”

Equally offensive to many scientists is the fact that Pons and Fleischmann have steadfastly refused to disclose important details of their work that would enable others to duplicate it. Though they eventually published an account of their experi-ments in the Journal of Electroanalytical Chemistry and Interfacial Electro- chemistry, a highly technical Swiss periodical, the paper was too sketchy to be truly enlightening. Pons has argued repeatedly that his critics who are getting negative results do not know how to run the experiment, but he does not show them precisely what they are doing wrong. Declares Keith Thomassen, a physicist who heads one of the fusion-research programs at Lawrence Livermore National Laboratory: “The hard, uncompromising way in which we do our business is that when you make a claim, you present the facts on which you base that claim.”

Why is Pons being so cagey? Perhaps because the discovery he and Fleischmann claim to have made could be worth a fortune. Keeping some of the secrets to themselves could serve to protect their financial interests and those of the University of Utah, which has already filed five patent applications, with more to come. Pons insists, though, that he has reached Laboratory to help its scientists replicate his cold-fusion experiments.

The awesome potential of the alleged discovery explains why so many people are badgering Pons and Fleischmann for information, and why they are giving it out so cautiously. A practical technique for creating useful fusion energy at low temper-atures could change the world forever by providing a source of virtually limitless power. Moreover, the process would generate no pollutants—not even carbon dioxide, which many scientists fear is warming the globe in a greenhouse effect. A fusion plant would give off much less radiation than do conventional nuclear-power generators. And it would essentially run on seawater. Any scientist managed to harness fusion would be guaranteed a Nobel Prize for Physics (and probably Peace as well), untold riches from licensing the process and a place in history alongside Einstein and slightly above Edison. Any scientist who confirmed the claim would get part of the resulting avalanche of research dollars, and anyone who shot it down would gain acclaim within the scientific community.

But the reasons for the fusion furor are more complicated than just the prospects of riches and fame. Scientists and university administrators are sometimes driven by the same sort of base emotions—like jealousy and paranoia—that often motivate less intellectually lofty folks, and the peculiar circumstances of this discovery helped ignite a number of long-smoldering resentments. For one thing, fusion and other subatomic phenomena that are usually studied with giant nuclear reactors and particle accelerators have long been the private domain of physicists. Chemists, on the other hand, were more likely to be studying how to make a better laundry detergent, or so physicists seem to think. It is no surprise, then, that the harshest critics of Pons and his dime-store equipment have been physicists. Retorts Pons: “Chemists are supposed to discover new chemicals. The physicists don’t like it when they discover new physicals.” In fact, many chemists feel—with much jus- tification—that the physicists consider themselves intellectually superior. Says Cheves Walling, a Utah chemist who has developed one theory to explain how the cold-fusion experiment might work: “Chemists resent the fact that physicists can get money for multimillion-dollar experiments that could have gone to chemists to do something more useful.”

Still, the cold-fusion combat is not just the physicists vs. the chemists. There is a sense in Salt Lake City that most of Pons’ critics are what Utah chemist David Grant calls “the mean bullies from the Eastern establishment.” Such snooty folks should remember, he says, that science is not the domain of one set of colleges or one set of people anymore.”

There is also an intense rivalry between the University of Utah—the U, for short--and Brigham Young University, located just 50 miles away. Although the U is the state-supported university, Utah’s majority Mormon population identifies far more strongly with church-run Brigham Young. It was at least partly because a Brigham Young physicist named Steven Jones was nearing an announcement on cold fusion too that Pons and Fleischmann called their surprise press conference. They had been urged to go public by University of Utah administrators, who were apparently fearful that arch-rivals at Brigham Young would steal the fusion spotlight. The U has had chronic money troubles recently, and an influx of fusion-research grants, not to mention international glory, could go a long way toward remedying the situation.

 Any serious prospect of practical fusion will attract federal research funding. For decades the Government has spent billions of dollars in pursuit of this tantaliz- ing but elusive goal. The first man-made fusion reactions took the form of H-bomb explosions in the 1950s. Scientists then set out to bring that incredible power under control. Their strategy was to confine deuterium, a heavy form of hydrogen, within a “bottle” of magnetic force and heat it to tens of millions of degrees. The nuclei of the atoms, forced close together despite their mutually repellent positive electric charges, would fuse, releasing energy. Elaborated and modified, that is the approach still being taken at such state-of-the-art facilities as Princeton’s Plasma Physics Laboratory. But the lab has achieved only brief bursts of fusion at enormous cost. A more recent concept, represented by Livermore’s Nova machine, is to take tiny “marbles” filled with deuterium and concentrate 100 trillion watts of laser light on them for a billionth of a second. The deuterium should theoretically fuse and produce energy, but a far more powerful laser would be needed to spark a useful reaction.

Although super-hot fusion has always been considered the best way to generate power, physicists have known since the 1950s that the process can take place at room temperature as well. If the electrons in deuterium are replaced with heavuier paticles called muons, the deuterium nuclei can approach each other more closely and occasionally fuse on their own. This muon-catalyzed fusion has never produced significant amounts of energy.

Yet the thought that cold fusion was possible at all continued to intrigue some scientists, including Pons and Fleischmann. When Pons got his Ph.D. at Southamp-ton in 1978, Fleischmann was his department head. They became close friends and collaborators after Pons graduated, and remained so when he settled at Utah . One day in 1984 Pons and Fleischmann had a sudden idea for a new way to achieve cold fusion. The brainstorm came, Pons says, during a hike up Mill creek Canyon, near his home in Salt Lake City. He and Fleischmann were puzzling over the peculiar properties of certain metals, like palladium, that are known to absorb huge quantities of hydrogen gas. In the presence of an electric field, the chemists had noticed, deuterium nuclei appeared to be unusually free to move around within palladium’s latticework of atoms. They speculated that the nuclei might even come close enough together to make nuclear fusion more likely.

We came down from the hike,’ recalls Pons, “and then we stood around the table in my kitchen, had a couple of Jack Daniel’s and started drawing pictures.” Their experiments resembled nothing more than the simple electrochemical cells often entered in high school science fairs: two metal electrodes immersed in a bath of water laced with mineral salts and connected to a power supply. The only differences were that one of the electrodes was made of palladium and the water was heavy water , or deuterium oxide (chemical formula D20), rather than ordinary H2O

The first experiments did not do much. But one night in 1985, an electro- chemical cell being used by the two scientists melted down. “That,” says Pons, “told us we had much more energy than could be attributed to a chemical reaction.” After the accident, Pons called Fleischmann, who had returned to England. Fleischmann responded to the momentous news with an admonition: “We’d better not talk on the phone.” Pons says they ultimately spent about $100,000 of their own money to pursue what they were convinced was fusion.

Neither Pons nor Fleischmann would have ranked high on anyone’s list of scientists likely to revolutionize physics, although both are respected researchers in the field of electrochemistry, the study of how chemical reactions behave in the presence of an electric field. In retrospect, though, their backgrounds were quirky enough to suggest that almost anything was possible. Pons, in particular, had an unorthodox professional history. A native North Carolinian, Pons, 46, dropped out of graduate school at the University of Michigan in 1967, just a few months shy of getting a Ph.D. in chemistry. “Jobs for Ph.D. chemists were paying $3,500 a year at the time,” he explains. “My daddy offered me $20,000.” He joined the family textile business, then went on to manage a family-owned restaurant in North Palm Beach, F1a But after nearly a decade away from science, Pons decided to go back and complete his degree. To do so at Michigan, though, he would have had to repeat most of the courses he had already taken. So he went to Southampton, where his credits would still count.

 After finishing his doctorate, Pons was able to make up for lost time, becoming chairman of the Utah chemistry department in 1988. Along the way he earned a reputation for diligence and creativity. Says Harry Mark, Pons’ adviser at Michigan: “Stan was innovative and controversial even back in grad school. What he’s doing now doesn’t surprise me.”

Fleischmann too is known for resourcefulness. Now 62, he arrived in England in 1939 with his family, Czech refugees from Hitler’s Europe, and soon distinguished himself in school and college. Ian Fells, who worked with him at the University of Newcastle, calls him a man of “great ideas,” and Roger Parsons, head of the chemistry department at.........(to be continued) For those sufficiently curious!



         Pons and Fleishmann were not the first to suggest they had harnessed the fabled power of fusion. Disappointments in the past include:

1926 German scientists Fritz Paneth and Kurt Peters described a way to create fusion with palladium, the same material now used by Pons and Fleischmann. Less than a year later the Germans admitted that they had made procedural errors, and published retractions.

1951 Argentine President Juan Peron declared that his German-trained fusion guru, Ronald Richter, had produced “controlled liberation of atomic energy,” using not uranium or plutonium but cheap local materials. ‘I know what the other material is that the Argentines are using,” said one skeptic. “It’s baloney.” Perón’s fusion project was later completely discredited, and Richter was arrested.

1956 U.S. physicist Luis Alvarez reported achieving low-temperature fusion. More research revealed that the reaction was too slow to put out a useful energy. He later wistfully recalled the “short but exhilarating experience when we thought we had solved all of the fuel problems of mankind for the rest of time.”

1958 Britain’s Sir John Cockcroft announced that he was “90% certain” that his ZETA (for Zero Energy Thermonuclear Assembly) machine had produced a controlled fusion reaction. THE MIGHTY ZETA, screamed the London Daily Mail; LIMITLESS FUEL FOR MILLIONS OF YEARS. But while ZETA generated big dreams, it never yielded more than small amounts of energy.




Putting Heat on Cold Fusion

Physicists dismiss the claims of Pons & Fleishmann

The spring meeting of the American Physical Society is normally a cool scientific congregation, but last week’s gathering of 1,500 physicists in Baltimore was more like an unusually hot celebrity roast. This elite clan convened a special panel to comment on the instant fame of Stanley Pons and Martin Fleischmann, two chemists who had dared to venture from their field into the private domain of nuclear physicists. Less than six weeks earlier, Pons, of the University of Utah, and Fleischmann, of Britain’s University of Southampton, claimed to have achieved nuclear fusion, the process that powers the sun, at room temperature. Because the experiment produced much more energy than it consumed, said the chemists, it could lead to the development of an almost limitless power source. Physicists were skeptical, but they scurried to their labs to see if the seemingly impossible could be true.

In Baltimore the physicists proclaimed their answer: no way. After weeks of thorough experimentation, researchers from numerous prest1gious institutions, including M.I.T., Caltech, Yale and Oak Ridge National Laboratory, reported that they had found no evidence of “cold” fusion. The scientists seemed incensed that they had wasted their time trying to replicate an error-filled experiment and chided the University of Utah for requesting a $25 million federal grant based on sloppy research. Said Caltech physicist Steven Koonin: “We are suffering from the incom etence and perhaps the delusions of Professors Pons and Fleischmann.” When the nine members of the cold-fusion review panel were asked if they thought the Utah experiment was a dead issue, eight raised their hands. The only holdout was Johann Rafelski of the University of Arizona, who did not support Pons and Fleischmann but said he would nonetheless withhold judgment.

The physicists offered several theories about where the Utah experiments had gone wrong. Pons and Fleischmann claimed that they had caused the nuclei of deuterium atoms, a heavy form of hydroen, to fuse together to form helium, thus releasing radiation and heat energy. But, the physicists suggested, the radiation detected might have come from radon that was already present in the laboratory’s air. The helium reported could also have seeped into the apparatus from the air.

Moreover, the physicists challenged the Utah team’s heat measurements, saying they were probably faulty because the solution in the setup was unstirred, the temp-erature was not uniform and the thermometer was placed in a “hot spot.” That conclusion moved Stanford physicist Walter Meyerhof to turn poetic. Said he: “Tens of millions of dollars are at stake, dear sister and brother,/ Because scientists put a thermometer at one place and not another.”

The roasting that Pons and Fleischmann took at the Baltimore meeting, which they declined to attend, is not likely to finish the debate over cold fusion. This week one or both of them may present new ex perimental results at a Los Angeles session of the Electrochemical Society, a gathering of chemists that may be more receptive tthe idea of fusion in ajar than the physicists were. The Utah team still enjoys support from groups of researchers at Stanford and Texas A&M, who say they have also produced heat in their own versions of the experiment. Pons continues to insist that other laboratories have failed to duplicate his results because of variations in materials or procedure. But unless Pons and Fleischmann show how the experiment can be replicated, their claims of cold fusion will count for nothing. Observes Arizona’s Rafelski: “Science is about knowing. It’s not about believing.”

 —By Dick Thompson—

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