MASSES OF VERY NEUTRON-DEFICIENT NUCLEI IN THE TIN REGION

被引：31

作者：

PLOCHOCKI, A ^{[1
]}

GOWDY, GM ^{[1
]}

KIRCHNER, R ^{[1
]}

KLEPPER, O ^{[1
]}

REISDORF, W ^{[1
]}

ROECKL, E ^{[1
]}

TIDEMANDPETERSSON, P ^{[1
]}

ZYLICZ, J ^{[1
]}

SCHREWE, UJ ^{[1
]}

KANTUS, R ^{[1
]}

VONDINCKLAGE, RD ^{[1
]}

SCHMIDTOTT, WD ^{[1
]}

机构：

[1] UNIV GOTTINGEN,INST PHYS 2,D-3400 GOTTINGEN,FED REP GER

来源：

NUCLEAR PHYSICS A | 1979年 / 332卷 / 1-2期

关键词：

Radioactivity;

D O I：

10.1016/0375-9474(79)90092-7

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Using γ-ray spectroscopy techniques, the β+/(EC + β+) probability ratios have been determined for individual beta transitions in the 108Sn → 108In, 106Sn → 106In and 104Cd → 108mAg decays. From a comparison of these ratios with the theoretical ones, the electron-capture decay energies QEc have been found to be 2048 ± 28, 3125 ± 80 and 1396 ± 26 keV, respectively. When combined with the known masses of 108,106In and 104mAg, and mass-difference data from earlier particlespectroscopy studies on very neutron-deficient xenon and tellurium isotopes, the new QEC values yield the following mass excesses in keV : - 83720 ± 30 (104Cd), - 73245 ± 130 (105Sn), - 77460 ± 90 (106Sn), - 82050±90 (108Sn), - 67620 ± 130 (109Te), - 72325 ± 100 (110Te)and - 62100 ± 130 (113Xe). The results are discussed in terms of semi-empirical mass formulae. The strength of the Z = 50 proton shell far from β-stability is derived from experimental data in a model-independent way. © 1979.

引用

页码：29 / 40

页数：12

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