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Phys. Rev. C 60, 034608 (1999) [12 pages]

Measurement of the screening potential in 3H β decay

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C. K. Hargrove
Centre for Research in Particle Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Canada K1S 5B6

D. J. Paterson and I. S. Batkin
Ottawa-Carleton Institute for Physics, Physics Department, Carleton University, 1125 Colonel By Drive, Ottawa, Canada K1S 5B6

Received 11 September 1998; published 9 August 1999

A gas proportional chamber has been employed to make precise observations of the low-energy portion of the 3H β spectrum in methane molecules. This spectrum has been well fit to the combination of an electron screening potential of 76±4 (stat) ±9 (sys) eV, simultaneously with -22±3 (stat) ±9 (sys) eV of molecular neutralization energy recovered in ionization of the gas. Both of these values are consistent with expectations based on self-consistent field predictions.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.60.034608
DOI:
10.1103/PhysRevC.60.034608
PACS:
23.40.-s