Total absorption spectroscopy of the β decay of 101,102Zr and 109Tc

被引：12

作者：

Dombos, A. C. ^{[1
,2
,3
,12
,13
]}

Spyrou, A. ^{[1
,2
,3
]}

Naqvi, F. ^{[1
,3
]}

Quinn, S. J. ^{[1
,2
,3
]}

Liddick, S. N. ^{[1
,3
,4
]}

Algora, A. ^{[5
,6
]}

Baumann, T. ^{[1
]}

Brett, J. ^{[7
]}

Crider, B. P. ^{[1
,8
]}

DeYoung, P. A. ^{[7
]}

Ginter, T. ^{[1
]}

Gombas, J. ^{[7
]}

Lyons, S. ^{[1
,3
,15
]}

Marketin, T. ^{[9
]}

Moller, P. ^{[10
,16
]}

Ong, W-J ^{[1
,2
,3
]}

Palmisano, A. ^{[1
,2
,3
]}

Pereira, J. ^{[1
,3
]}

Prokop, C. J. ^{[1
,4
]}

Sarriguren, P. ^{[11
]}

Scriven, D. P. ^{[2
]}

Simon, A. ^{[12
,13
]}

Smith, M. K. ^{[1
,3
]}

Valenta, S. ^{[14
]}

机构：

[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[3] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA

[4] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

[5] Univ Valencia, CSIC, Inst Fis Corpuscular, E-46071 Valencia, Spain

[6] Hungarian Acad Sci, Inst Nucl Res, H-4026 Debrecen, Hungary

[7] Hope Coll, Dept Phys, Holland, MI 49422 USA

[8] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA

[9] Univ Zagreb, Fac Sci, Dept Phys, Zagreb 10000, Croatia

[10] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA

[11] CSIC, Inst Estruct Mat, Serrano 123, E-28006 Madrid, Spain

[12] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[13] Univ Notre Dame, Joint Inst Nucl Astrophys, Notre Dame, IN 46556 USA

[14] Charles Univ Prague, Fac Math & Phys, Prague 18000, Czech Republic

[15] Pacific Northwest Natl Lab, Richland, WA 99352 USA

[16] P Moller Sci Comp & Graph, POB 75009, Honolulu, HI 96836 USA

来源：

PHYSICAL REVIEW C | 2021年 / 103卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevC.103.025810

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：

The beta decay of Zr-101,Zr-102 and Tc-109 was studied using the technique of total absorption spectroscopy. The experiment was performed at the National Superconducting Cyclotron Laboratory using the Summing NaI(Tl) (SuN) detector in the first-ever application of total absorption spectroscopy with a fast beam produced via projectile fragmentation. The beta-decay feeding intensity and Gamow-Teller transition strength distributions were extracted for these three decays. The extracted distributions were compared to three different quasiparticle random-phase approximation (QRPA) models based on different mean-field potentials. A comparison with calculations from one of the QRPA models was performed to learn about the ground-state shape of the parent nucleus. For Zr-101 and Zr-102, calculations assuming a pure shape configuration (oblate or prolate) were not able to reproduce the extracted distributions. These results may indicate that some type of mixture between oblate and prolate shapes is necessary to reproduce the extracted distributions. For Tc-109, a comparison of the extracted distributions with QRPA calculations suggests a dominant oblate configuration. The other two QRPA models are commonly used to provide beta-decay properties in r-process network calculations. This work shows the importance of making comparisons between the experimental and theoretical beta-decay distributions, rather than just half-lives and beta-delayed neutron emission probabilities, as close to the r-process path as possible.

引用

页数：20

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