Determination of the Ge-76 double beta decay Q value

Douysset, G.; Fritioff, T.; Carlberg, C.; Bergstrom, I.; Bjorkhage, M.

doi:10.1103/PhysRevLett.86.4259

Determination of the Ge-76 double beta decay Q value

G. Douysset
(
- Stockholm U.
)
,
T. Fritioff
(
- Stockholm U.
)
,
C. Carlberg
(
- Stockholm U.
)
,
I. Bergstrom
(
- Siegbahn Inst. Phys., Stockholm
)
,
M. Bjorkhage
(
- Siegbahn Inst. Phys., Stockholm
)

2001

4 pages

Published in:

Phys.Rev.Lett. 86 (2001) 4259-4262

DOI:

10.1103/PhysRevLett.86.4259

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Abstract: (APS)

The Q value of the 76Ge double beta decay has been determined by measuring the masses of 76Ge and 76Se in a Penning trap using neon- and fluorinelike ions. The obtained masses are 75.921 402 758(96) u and 75.919 213 795(81) u, respectively. The systematic errors of these two determinations are nearly equal, and therefore, the remaining systematic uncertainty of the Q value is drastically reduced. A Q value of 2 039.006(50) keV was obtained improving the accuracy of the accepted value by a factor of 6.

germanium: double-beta decay
decay: energy
germanium: mass
selenium: mass
experimental results