Distinction between sequential and direct three-body decays

被引：47

作者：

Alvarez-Rodriguez, R. ^{[1
]}

Fynbo, H. O. U. ^{[1
]}

Jensen, A. S. ^{[1
]}

Garrido, E. ^{[2
]}

机构：

[1] Univ Aarhus, Dept Phys & Astron, DK-8000 Aarhus, Denmark

[2] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.100.192501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss the three-body decay mechanisms of many-body resonances. Sequential decays proceed via two-body configurations after emission of the third particle. In direct decay all three particles leave their interaction regions simultaneously. The intermediate paths within the interaction regions are not observables and are only accessible through models. The momentum distributions carry, apart from polarization, all possible information about decay modes and resonance structure. In this context we discuss detailed results for the decay of the Be-9(5/2(-)) resonance.

引用

页数：4

共 15 条

[1] Energy distributions from three-body decaying many-body resonances [J].

Alvarez-Rodriguez, R. ;

Jensen, A. S. ;

Fedorov, D. V. ;

Fynbo, H. O. U. ;

Garrido, E. .

PHYSICAL REVIEW LETTERS, 2007, 99 (07)

[2] Structure of low-lying 12C resonances [J].

Alvarez-Rodriguez, R. ;

Garrido, E. ;

Jensen, A. S. ;

Fedorov, D. V. ;

Fynbo, H. O. U. .

EUROPEAN PHYSICAL JOURNAL A, 2007, 31 (03) :303-317

[3] Proton-antiproton annihilation and mason spectroscopy with the Crystal Barrel [J].

Amsler, C .

REVIEWS OF MODERN PHYSICS, 1998, 70 (04) :1293-1339

[4] First observation of two-proton radioactivity from an atomic nucleus [J].

Blank, B ;

Giovinazzo, J ;

Pfützner, M .

COMPTES RENDUS PHYSIQUE, 2003, 4 (4-5) :521-527

[5]

DALITZ RH, 1953, PHILOS MAG, V44, P1068

[6] Microscopic three-cluster study of the low-energy 9Be photodisintegration [J].

Descouvemont, P .

EUROPEAN PHYSICAL JOURNAL A, 2001, 12 (04) :413-419

[7] Complex scaling of the hyper-spheric coordinates and Faddeev equations [J].

Fedorov, DV ;

Garrido, E ;

Jensen, AS .

FEW-BODY SYSTEMS, 2003, 33 (2-3) :153-171

[8] Clarification of the three-body decay of 12C (12.71 MeV) -: art. no. 082502 [J].

Fynbo, HOU ;

Prezado, Y ;

Bergmann, UC ;

Borge, MJG ;

Dendooven, P ;

Huang, WX ;

Huikari, J ;

Jeppesen, H ;

Jones, P ;

Jonson, B ;

Meister, M ;

Nyman, G ;

Riisager, K ;

Tengblad, O ;

Vogelius, IS ;

Wang, Y ;

Weissman, L ;

Rolander, KW ;

Aystö, J .

PHYSICAL REVIEW LETTERS, 2003, 91 (08) :825021-825024

[9] Experimental and quantum-chemical studies on the three-particle fragmentation of neutral triatomic hydrogen -: art. no. 062506 [J].

Galster, U ;

Baumgartner, F ;

Müller, U ;

Helm, H ;

Jungen, M .

PHYSICAL REVIEW A, 2005, 72 (06)

[10] Energy distributions of charged particles from three-body decay [J].

Garrido, E. ;

Fedorov, D. V. ;

Fynbo, H. O. U. ;

Jensen, A. S. .

NUCLEAR PHYSICS A, 2007, 781 (3-4) :387-406

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