First direct observation of two protons in the decay of 45Fe with a time-projection chamber

被引：63

作者：

Giovinazzo, J.

Blank, B.

Borcea, C.

Canchel, G.

Dalouzy, J.-C.

Demonchy, C. E.

Santos, F. de Oliveira

Dossat, C.

Grevy, S.

Hay, L.

Huikari, J.

Leblanc, S.

Matea, I.

Pedroza, J.-L.

Perrot, L.

Pibernat, J.

Serani, L.

Stodel, C.

Thomas, J.-C.

机构：

[1] Univ Bordeaux 1, IN2P3, CNRS, Ctr Etud Nucl Bordeaux Gradignan,UMR 5797, F-33175 Gradignan, France

[2] CEA, CNRS, IN2P3, DSM, F-14076 Caen 5, France

[3] CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France

[4] NIPNE HH, Bucharest, Romania

[5] Lab PHLAM, F-59655 Villeneuve Dascq, France

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.99.102501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The decay of the ground-state two-proton emitter Fe-45 was studied with a time-projection chamber and the emission of two protons was unambiguously identified. The total decay energy and the half-life measured in this work agree with the results from previous experiments. The present result constitutes the first direct observation of the individual protons in the two-proton decay of a long-lived ground-state emitter. In parallel, we identified for the first time directly two-proton emission from Cr-43, a known ss-delayed two-proton emitter. The technique developed in the present work opens the way to a detailed study of the mechanism of ground state as well as ss-delayed two-proton radioactivity.

引用

页数：4

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