Precision measurement of the 210Bi β spectrum

被引：7

作者：

Alekseev, I. E. ^{[1
]}

Bakhlanov, S., V ^{[2
]}

Derbin, A., V ^{[2
]}

Drachnev, I. S. ^{[2
]}

Kotina, I. M. ^{[2
]}

Lomskaya, I. S. ^{[2
]}

Muratova, V. N. ^{[2
]}

Niyazova, N., V ^{[2
]}

Semenov, D. A. ^{[2
]}

Trushin, M., V ^{[2
]}

Unzhakov, E., V ^{[2
]}

机构：

[1] VG Khlopin Radium Inst, St Petersburg 194021, Russia

[2] Natl Res Ctr, Petersburg Nucl Phys Inst, Kurchatov Inst, Gatchina 188350, Russia

来源：

PHYSICAL REVIEW C | 2020年 / 102卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

NUCLEAR-MATRIX ELEMENTS; RAY SPECTRUM; HIGH-RESOLUTION; DECAY; SPECTROMETER; SIMULATION; SEARCH; MASS;

D O I：

10.1103/PhysRevC.102.064329

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 precision measurement of beta-spectrum shape for Bi-210 (historically RaE) has been performed with a spectrometer based on semiconductor Si(Li) detector. This first forbidden nonunique transition has the transition form factor strongly deviated from unity, and knowledge of its spectrum would play an important role in low-background physics in the presence of Pb-210 background. The measured transition formfactor could be approximated as C(W ) = 1 + (-0.4470 +/- 0.0013)W + (0.0552 +/- 0.0004)W-2, that is in good agreement with previous studies and has significantly increased parameter precision.

引用

页数：8

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