Interplay between sequential and prompt two-proton decay from the first excited state of 16Ne

被引：35

作者：

Brown, K. W. ^{[1
,2
]}

Charity, R. J. ^{[1
,2
]}

Sobotka, L. G. ^{[1
,2
]}

Grigorenko, L. V. ^{[3
,4
,5
]}

Golubkova, T. A. ^{[6
]}

Bedoor, S.

Buhro, W. W. ^{[9
]}

Chajecki, Z. ^{[9
]}

Elson, J. M. ^{[1
,2
]}

Lynch, W. G. ^{[9
,10
]}

Manfredi, J. ^{[9
,10
]}

McNeel, D. G. ^{[7
,8
]}

Reviol, W. ^{[1
,2
]}

Shane, R. ^{[9
,10
]}

Showalter, R. H. ^{[9
,10
]}

Tsang, M. B. ^{[9
,10
]}

Winkelbauer, J. R. ^{[9
,10
]}

Wuosmaa, A. H. ^{[7
,8
]}

机构：

[1] Washington Univ, Dept Chem, St Louis, MO 63130 USA

[2] Washington Univ, Dept Phys, St Louis, MO 63130 USA

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

[4] Natl Res Nucl Univ MEPhI, RU-115409 Moscow, Russia

[5] Natl Res Ctr Kurchatov Inst, RU-123182 Moscow, Russia

[6] Moscow MV Lomonosov State Univ, Adv Educ & Sci Ctr, RU-121357 Moscow, Russia

[7] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA

[8] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA

[9] Michigan State Univ, Natl Supercond Cyclotron Lab, E Lansing, MI 48824 USA

[10] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW C | 2015年 / 92卷 / 03期

基金：

俄罗斯基础研究基金会; 美国国家科学基金会;

关键词：

NUCLEI;

D O I：

10.1103/PhysRevC.92.034329

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 first excited, J(pi) = 2(+) state of Ne-16 at E* = 1.69(2) MeV is well populated in neutron knockout reactions with a Ne-17 beam and the correlations between the momenta of the three final fragments following 2p decay were measured. The correlation pattern showed aspects of both sequential and diprotonlike decay, which were reproduced in three-body O-14 + p + p calculations. These calculations suggest that interference between these processes is responsible for the observed features which can be described in terms of a "tethered decay mechanism." The intrinsic width of this state was constrained to be from 100 to 250 keV. Higher excited states populating the N-13 + p + p + p exit channel were found at E* = 8.37(10) and 10.76(20) MeV.

引用

页数：12

共 20 条

[1] Observation of Long-Range Three-Body Coulomb Effects in the Decay of 16Ne
Brown, K. W.
Charity, R. J.
Sobotka, L. G.
Chajecki, Z.
Grigorenko, L. V.
Egorova, I. A.
Parfenova, Yu. L.
Zhukov, M. V.
Bedoor, S.
Buhro, W. W.
Elson, J. M.
Lynch, W. G.
Manfredi, J.
McNeel, D. G.
Reviol, W.
Shane, R.
Showalter, R. H.
Tsang, M. B.
Winkelbauer, J. R.
Wuosmaa, A. H.
[J]. PHYSICAL REVIEW LETTERS, 2014, 113 (23)
[2] Democratic Decay of 6Be Exposed by Correlations
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.
[J]. PHYSICAL REVIEW LETTERS, 2012, 109 (20)
[3] Pionic double charge exchange on N = Z doubly closed shell nuclei
Fohl, K
Bilger, R
Clement, H
Grater, J
Meier, R
Patzold, J
Schapler, D
Wagner, GJ
Wilhelm, O
Kluge, W
Wieser, R
Schepkin, M
Abela, R
Foroughi, F
Renker, D
[J]. PHYSICAL REVIEW LETTERS, 1997, 79 (20) : 3849 - 3852
[4] Constraints on energies of 15F(g.s.), 15O(1/2+, T=3/2), and 16F(0+, T=2)
Fortune, H. T.
[J]. PHYSICAL REVIEW C, 2006, 74 (05):
[5] ON NEUTRON-DEFICIENT ISOTOPES OF LIGHT NUCLEI AND THE PHENOMENA OF PROTON AND 2-PROTON RADIOACTIVITY
GOLDANSKY, VI
[J]. NUCLEAR PHYSICS, 1960, 19 (05): : 482 - 495
[6] Two-proton radioactivity and three-body decay. IV. Connection to quasiclassical formulation
Grigorenko, L. V.
Zhukov, M. V.
[J]. PHYSICAL REVIEW C, 2007, 76 (01):
[7] Two-proton radioactivity and three-body decay. III. Integral formulas for decay widths in a simplified semianalytical approach
Grigorenko, L. V.
Zhukov, M. V.
[J]. PHYSICAL REVIEW C, 2007, 76 (01):
[8] Thomas-Ehrman effect in a three-body model: The 16Ne case
Grigorenko, L. V.
Golubkova, T. A.
Zhukov, M. V.
[J]. PHYSICAL REVIEW C, 2015, 91 (02):
[9] Sensitivity of three-body decays to the reactions mechanism and the initial structure by example of 6Be
Grigorenko, L. V.
Egorova, I. A.
Charity, R. J.
Zhukov, M. V.
[J]. PHYSICAL REVIEW C, 2012, 86 (06):
[10] Three-body decay of 6Be
Grigorenko, L. V.
Wiser, T. D.
Mercurio, K.
Charity, R. J.
Shane, R.
Sobotka, L. G.
Elson, J. M.
Wuosmaa, A. H.
Banu, A.
McCleskey, M.
Trache, L.
Tribble, R. E.
Zhukov, M. V.
[J]. PHYSICAL REVIEW C, 2009, 80 (03):

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