Lifetime and Fragment Correlations for the Two-Neutron Decay of 26O Ground State

被引：44

作者：

Grigorenko, L. V. ^{[1
,2
,3
]}

Mukha, I. G. ^{[2
]}

Zhukov, M. V. ^{[4
]}

机构：

[1] JINR, Flerov Lab Nucl React, RU-141980 Dubna, Russia

[2] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[3] IV Kurchatov Atom Energy Inst, Natl Res Ctr, RU-123182 Moscow, Russia

[4] Chalmers, S-41296 Gothenburg, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

2-PROTON RADIOACTIVITY; ISOTOPES;

D O I：

10.1103/PhysRevLett.111.042501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The structure and decay of O-26 are investigated in a three-body O-24 + n + n model suitable for studies of the long-lived (including radioactivity time scale) states. We have found extremely strong effects of the subbarrier configuration mixing on the decay width of true 2n emitters due to core recoil and neutron-neutron final state interaction. This effect far exceeds the analogous effect in the true 2p emitters. Our calculations provide reasonably narrow boundaries for the lifetime vs decay energy dependence for the true 2n emission. An upper limit of similar to 1 keV for the decay energy of the unbound O-26 is inferred based on the recent experimental lifetime value.

引用

页数：5

共 19 条

[1]

Brown G.E., 1976, NUCLEON NUCLEON INTE

[2]

Caesar C., ARXIV12090156

[3] Democratic Decay of 6Be Exposed by Correlations [J].

Egorova, I. A. ;

Charity, R. J. ;

Grigorenko, L. V. ;

Chajecki, Z. ;

Coupland, D. ;

Elson, J. M. ;

Ghosh, T. K. ;

Howard, M. E. ;

Iwasaki, H. ;

Kilburn, M. ;

Lee, Jenny ;

Lynch, W. G. ;

Manfredi, J. ;

Marley, S. T. ;

Sanetullaev, A. ;

Shane, R. ;

Shetty, D. V. ;

Sobotka, L. G. ;

Tsang, M. B. ;

Winkelbauer, J. ;

Wuosmaa, A. H. ;

Youngs, M. ;

Zhukov, M. V. .

PHYSICAL REVIEW LETTERS, 2012, 109 (20)

[4] ON NEUTRON-DEFICIENT ISOTOPES OF LIGHT NUCLEI AND THE PHENOMENA OF PROTON AND 2-PROTON RADIOACTIVITY [J].

GOLDANSKY, VI .

NUCLEAR PHYSICS, 1960, 19 (05) :482-495

[5] The 8He and 10He spectra studied in the (t, p) reaction [J].

Golovkov, M. S. ;

Grigorenko, L. V. ;

Ter-Akopian, G. M. ;

Fomichev, A. S. ;

Oganessian, Yu. Ts. ;

Gorshkov, V. A. ;

Krupko, S. A. ;

Rodin, A. M. ;

Sidorchuk, S. I. ;

Slepneva, R. S. ;

Stepantsov, S. V. ;

Wolski, R. ;

Pang, D. Y. ;

Chudoba, V. ;

Korsheninnikov, A. A. ;

Kuzmin, E. A. ;

Nikolskii, E. Yu. ;

Novatskii, B. G. ;

Stepanov, D. N. ;

Roussel-Chomaz, P. ;

Mittig, W. ;

Ninane, A. ;

Hanappe, F. ;

Stuttge, L. ;

Yukhimchuk, A. A. ;

Perevozchikov, V. V. ;

Vinogradov, Yu. I. ;

Grishechkin, S. K. ;

Zlatoustovskiy, S. V. .

PHYSICS LETTERS B, 2009, 672 (01) :22-29

[6] Two-neutron radioactivity and four-nucleon emission from exotic nuclei [J].

Grigorenko, L. V. ;

Mukha, I. G. ;

Scheidenberger, C. ;

Zhukov, M. V. .

PHYSICAL REVIEW C, 2011, 84 (02)

[7] Theory of two-proton radioactivity with application to 19Mg and 48Ni [J].

Grigorenko, LV ;

Johnson, RC ;

Mukha, IG ;

Thompson, IJ ;

Zhukov, MV .

PHYSICAL REVIEW LETTERS, 2000, 85 (01) :22-25

[8] Determination of the n=16 shell closure at the oxygen drip line [J].

Hoffman, C. R. ;

Baumann, T. ;

Bazin, D. ;

Brown, J. ;

Christian, G. ;

DeYoung, P. A. ;

Finck, J. E. ;

Frank, N. ;

Hinnefeld, J. ;

Howes, R. ;

Mears, P. ;

Mosby, E. ;

Mosby, S. ;

Reith, J. ;

Rizzo, B. ;

Rogers, W. F. ;

Peaslee, G. ;

Peters, W. A. ;

Schiller, A. ;

Scott, M. J. ;

Tabor, S. L. ;

Thoennessen, M. ;

Voss, P. J. ;

Williams, T. .

PHYSICAL REVIEW LETTERS, 2008, 100 (15)

[9] The unbound isotopes 9,10He [J].

Johansson, H. T. ;

Aksyutina, Yu. ;

Aumann, T. ;

Boretzky, K. ;

Borge, M. J. G. ;

Chatillon, A. ;

Chulkov, L. V. ;

Cortina-Gil, D. ;

Pramanik, U. Datta ;

Emling, H. ;

Forssen, C. ;

Fynbo, H. O. U. ;

Geissel, H. ;

Ickert, G. ;

Jonson, B. ;

Kulessa, R. ;

Langer, C. ;

Lantz, M. ;

LeBleis, T. ;

Mahata, K. ;

Meister, M. ;

Muenzenberg, G. ;

Nilsson, T. ;

Nyman, G. ;

Palit, R. ;

Paschalis, S. ;

Prokopowicz, W. ;

Reifarth, R. ;

Richter, A. ;

Riisager, K. ;

Schrieder, G. ;

Simon, H. ;

Suemmerer, K. ;

Tengblad, O. ;

Weick, H. ;

Zhukov, M. V. .

NUCLEAR PHYSICS A, 2010, 842 :15-32

[10] Study of Two-Neutron Radioactivity in the Decay of 26O [J].

Kohley, Z. ;

Baumann, T. ;

Bazin, D. ;

Christian, G. ;

DeYoung, P. A. ;

Finck, J. E. ;

Frank, N. ;

Jones, M. ;

Lunderberg, E. ;

Luther, B. ;

Mosby, S. ;

Nagi, T. ;

Smith, J. K. ;

Snyder, J. ;

Spyrou, A. ;

Thoennessen, M. .

PHYSICAL REVIEW LETTERS, 2013, 110 (15)

← 1 2 →