New measurement of 7Be half-life in different metallic environments

被引：15

作者：

Limatala, B. N. ^{[1
,3
]}

Fueloep, Zs. ^{[2
]}

Schuermann, D. ^{[4
]}

De Cesare, N. ^{[5
]}

D'Onofrio, A. ^{[5
]}

Esposito, A. ^{[5
]}

Gialanella, L. ^{[1
,3
]}

Gyurky, Gy. ^{[2
]}

Imbriani, G. ^{[1
,3
]}

Raiola, F. ^{[4
]}

Roca, V. ^{[1
,3
]}

Rogalla, D. ^{[5
]}

Rolfs, C. ^{[4
]}

Romano, M. ^{[1
,3
]}

Somorjai, E. ^{[2
]}

Strieder, F. ^{[4
]}

Terrasi, F. ^{[5
]}

机构：

[1] Univ Fed II, Dipartimento Sci Fis, Naples, Italy

[2] ATOMKI, H-4001 Debrecen, Hungary

[3] Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy

[4] Ruhr Univ Bochum, Inst Expt Phys 3, Bochum, Germany

[5] Univ Naples 2, Fac Sci Ambientali, Caserta, Italy

来源：

EUROPEAN PHYSICAL JOURNAL A | 2006年 / 27卷 / Suppl 1期

关键词：

21.10.Tg Lifetimes; 23.40.-s β decay; double β decay; electron and muon capture; 27.20.+n 6 ⩽ ; ⩽ 19;

D O I：

10.1140/epja/i2006-08-029-2

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：

(7)Be decays via electron capture and therefore its half-life is expected to depend on the electron density at the nucleus. We measured the (7)Be half-life in palladium, tungsten, zirconium and tantalum metals, in order to investigate the influence of the quasi-free electrons in metals on the probability of electron capture. The (7)Be samples were obtained implanting a 4.85 MeV pure radioactive (7)Be ion beam. The (7)Be half-life was determined measuring the 478 keV gamma decay following the electron capture by means of HPGe detectors. In order to reduce systematic errors, we planned to perform independent measurements in three different laboratories: Naples (Italy), Bochum (Germany) and Debrecen (Hungary). On the basis of the first results, we do not find a (7)Be half-life change within the experimental errors of 0.4%.

引用

页码：193 / 196

页数：4

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