Double-beta decay of 150Nd to excited levels of 150Sm

被引：0

作者：

Barabash, A. S.

Belli, P. ^{[1
,2
]}

Bernabei, R. ^{[1
,2
]}

Boiko, R. S. ^{[3
,4
]}

Cappella, F. ^{[5
,6
]}

Caracciolo, V. ^{[1
,2
]}

Cerulli, R. ^{[1
,2
]}

Danevich, F. A. ^{[1
,3
]}

Fang, D. L. ^{[7
,8
]}

Ferella, F. ^{[9
]}

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

Kobychev, V. V. ^{[3
]}

Konovalov, S. I.

Laubenstein, M. ^{[9
]}

Leoncini, A. ^{[1
,2
]}

Merlo, V. ^{[1
,2
]}

Nisi, S. ^{[9
]}

Nitescu, O. ^{[10
,11
,12
]}

Poda, D. V. ^{[13
]}

Polischuk, O. G. ^{[3
,5
]}

Shcherbakov, I. b. -k. ^{[14
]}

Simkovic, F. ^{[10
,15
]}

Timonina, A. ^{[14
]}

Tinkova, V. S. ^{[16
,17
]}

Tretyak, V. I. ^{[3
,9
]}

Umatov, V. I.

机构：

[1] INFN, Sez Roma Tor Vergata, I-00133 Rome, Italy

[2] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[3] NASU, Inst Nucl Res, UA-03028 Kyiv, Ukraine

[4] Natl Univ Life & Environm Sci Ukraine, UA-03041 Kyiv, Ukraine

[5] INFN, Sez Roma, I-00185 Rome, Italy

[6] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[7] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[8] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[9] INFN, Lab Nazl Gran Sasso, I-67100 Assergi, AQ, Italy

[10] Comenius Univ, Fac Math Phys & Informat, Bratislava 84248, Slovakia

[11] Int Ctr Adv Training & Res Phys, POB MG12, Magurele 077125, Romania

[12] Horia Hulubei Natl Inst Phys & Nucl Engn, 30 Reactorului,POB MG 6, RO-077125 Bucharest, Romania

[13] Univ Paris Saclay, IJCLab, CNRS, IN2P3, F-91405 Orsay, France

[14] NASU, State Sci Inst Inst Single Crystals, UA-61072 Kharkiv, Ukraine

[15] Czech Tech Univ, Inst Expt & Appl Phys, Prague 11000, Czech Republic

[16] NASU, Inst Scintillat Mat, UA-61072 Kharkiv, Ukraine

[17] Univ Zilina, Res Ctr, Univ 8215-1, Zilina 010 26, Slovakia

来源：

EUROPEAN PHYSICAL JOURNAL C | 2025年 / 85卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

NUCLEAR-DATA SHEETS; ELEMENTS; PHYSICS; STATES; GE-76;

D O I：

10.1140/epjc/s10052-025-13901-y

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

he 2 nu 2 beta decay of Nd-150 to the first excited 740.5 keV 0(1 )(+)level of Sm-150 was measured over 5.845 years with the help of a four-crystal low-background HPGe gamma spec-trometry system in the underground low-background laboratory STELLA of LNGS-INFN. A 2.381 kg highly purified Nd-containing sample was employed as the decay source. The expected de-excitation gamma-quanta of the 0(1)(+)levelwith energies 334.0 keV and 406.5 keV were observed both in one-dimensional spectrum and in coincidence data resulting in the half-life T-1/2=[0.83(-0.13)(+0.18)(stat)(+0.16)(-0.19)(syst)]x10(20 )year. Interpreting an excess of the 334.0-keV peak area as an indication of the 2 beta decay of Nd-150 to the 334.0 keV 2(1)(+)excited level of Sm-150 with a half-life of T-1/2=[1.5(-0.6)(+2.3)(stat)+/- 0.4(syst)]x10(20 ) year, the 2 nu 2 beta half-life of Nd-150 for the transition to the 0(1 )(+)level is T-1/2=[1.03+0.35-0.22(stat)+0.16-0.19(syst)]x10(20 )year, in agreement with the previous experiments. Both half-life values reasonably agree with the theoretical calculations in the framework of proton-neutron QRPA with isospin restoration combined with like nucleon QRPA for description of excited states in the final nuclei. For 2 nu 2 beta and 0 nu 2 beta transitions of Nd-150 and 148Nd to several excited levels of Sm-150 and148Sm, limits were set at level of T-1/2>10(20 )-10(21)year.

引用

页数：30