Beta-decay energy measurements using total gamma-absorption spectroscopy

Abstract

Abstract. An application of the total 7-absorption (TGA) spectroscopy to measurements of the/~-decay energies (Q) for nuclei far from stability is described. This approach provides the Q-values with accuracies up to 60 keV. The Q values determined by this method at the IRIS facility for 64 nuclides in the mass region from A = 76 to A = 165 are presented.

Discovery of the cerium isotopes

“…In addition, the measured half-lives of approximately 13 min [21] and 3.5(5) min [22] are in disagreement. A later measurement of 3.5(3) min [23] was not included in the ENSDF data evaluation. 130…”

Optimizing recoil-isomer tagging with the Argonne fragment mass analyzer

“…The 243 keV gamma ray is from the b þ decay of 86 Zr which was a strong reaction product in the previous setting with a 58 Ni target and has a half-life of 16.5 h [15]. The 617 keV gamma ray is emitted following the b þ decay of 80 Rb with a half-life of 34 s [16]. The 511 keV gamma ray is a result of positron annihilation.…”

Observations of the Gamow-Teller resonance in the rare-earth nuclei aboveGd146populated inβdecay

“…This is the reason why, in this case, we have used the value we obtained using the end point of the EC spectrum in the TAS detector as in Ref. [41] (see Fig. 7):…”