Volume 81, Number 4, February 2008
Article Number 42001
Number of page(s) 6
Section Nuclear Physics
Published online 11 January 2008
EPL, 81 (2008) 42001
DOI: 10.1209/0295-5075/81/42001

Observation of the acceleration by an electromagnetic field of nuclear beta decay

H. R. Reiss

American University - Washington, DC 20016-8058, USA and Max Born Institute - 12489 Berlin, Germany

received 9 September 2007; accepted in final form 7 December 2007; published February 2008
published online 11 January 2008

Measurements are reported of the acceleration of the first-forbidden beta decay of 137Cs by exposure to intense, low-frequency electromagnetic fields. Two separate experiments were done: one in a coaxial cavity, and the other in a coaxial transmission line. The first showed an increase in the beta decay rate of (6.8$\pm$3.2)$\times$10-4 relative to the natural rate, and the other resulted in an increase of (6.5$\pm$2.0)$\times$10-4. In addition, a Fourier analysis of the rate of 662 keV gamma emission following from the beta decay in the standing-wave experiment showed a clear indication of the frequency with which the external field was switched on and off. A simultaneously detected gamma emission from a placebo nucleus showed no such peak.

23.40.-s - $\beta$ decay; double $\beta$ decay; electron and muon capture.
23.90.+w - Other topics in radioactive decay and in-beam spectroscopy.
28.90.+i - Other topics in nuclear engineering and nuclear power studies.

© EPLA 2008