Three-body decay of linear-chain states in 14C

被引：25

作者：

Baba, T. ^{[1
]}

Kimura, M. ^{[1
,2
]}

机构：

[1] Hokkaido Univ, Dept Phys, Sapporo, Hokkaido 0600810, Japan

[2] Hokkaido Univ, Fac Sci, React Nucl Data Ctr, Sapporo, Hokkaido 0600810, Japan

来源：

PHYSICAL REVIEW C | 2017年 / 95卷 / 06期

关键词：

ANTISYMMETRIZED MOLECULAR-DYNAMICS; EXCITED-STATES;

D O I：

10.1103/PhysRevC.95.064318

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 decay properties of the linear-chain states in C-14 are investigated by using antisymmetrized molecular dynamics. The calculation predicts two rotational bands with linear-chain configurations having the pi-bond and sigma-bond valence neutrons. For the pi-bond linear-chain, the calculated excitation energies and the widths of alpha-decay to the ground state of Be-10 reasonably agree with the experimental candidates observed by the alpha + Be-10 resonant scattering. On the other hand, the sigma-bond linear-chain is the candidate of the higher-lying resonant states reported by the breakup reaction. As the evidence of the sigma-bond linear chain, we discuss its decay pattern. It is found that the sigma-bond linear chain not only decays to the excited band of Be-10 but also decays to the three-body channel of He-6 + alpha + alpha, and the branching ratio of these decays are comparable. Hence, we suggest that this characteristic decay pattern is a strong signature of the linear-chain formation and a key observable to distinguish two different linear chains.

引用

页数：9

共 47 条

[1] Measurements of the breakup and neutron removal cross sections for 16C -: art. no. 064607 [J].

Ashwood, NI ;

Freer, M ;

Angélique, JC ;

Bouchat, V ;

Catford, WN ;

Clarke, NM ;

Curtis, N ;

Dorvaux, O ;

Hanappe, F ;

Kerckx, Y ;

Labiche, M ;

Lecouey, JL ;

Marqués, FM ;

Materna, T ;

Ninane, A ;

Normand, G ;

Orr, NA ;

Pain, S ;

Soic, N ;

Stuttgé, L ;

Timis, C ;

Unshakova, A ;

Ziman, VA .

PHYSICAL REVIEW C, 2004, 70 (06) :064607-1

[2] Structure and decay pattern of the linear-chain state in 14C [J].

Baba, T. ;

Kimura, M. .

PHYSICAL REVIEW C, 2016, 94 (04)

[3] 3α clustering in excited states of 16C [J].

Baba, T. ;

Chiba, Y. ;

Kimura, M. .

PHYSICAL REVIEW C, 2014, 90 (06)

[4] TIME-DEPENDENT QUANTUM COLLECTIVE DYNAMICS APPLIED TO NUCLEAR-FISSION [J].

BERGER, JF ;

GIROD, M ;

GOGNY, D .

COMPUTER PHYSICS COMMUNICATIONS, 1991, 63 (1-3) :365-374

[5] Spectroscopy of particle-hole states of 16C -: art. no. 054606 [J].

Bohlen, HG ;

Kalpakchieva, R ;

Gebauer, B ;

Grimes, SM ;

Lenske, H ;

Lieb, KP ;

Massey, TN ;

Milin, M ;

von Oertzen, W ;

Schulz, C ;

Kokalova, T ;

Torilov, S ;

Thummerer, S .

PHYSICAL REVIEW C, 2003, 68 (05) :546061-5460610

[6] Structure of the Hoyle state in 12C [J].

Chernykh, M. ;

Feldmeier, H. ;

Neff, T. ;

von Neumann-Cosel, P. ;

Richter, A. .

PHYSICAL REVIEW LETTERS, 2007, 98 (03)

[7] New experimental investigation of the structure of 10Be and 16C by means of intermediate-energy sequential breakup [J].

Dell'Aquila, D. ;

Lombardo, I. ;

Acosta, L. ;

Andolina, R. ;

Auditore, L. ;

Cardella, G. ;

Chatterjiee, M. B. ;

De Filippo, E. ;

Francalanza, L. ;

Gnoffo, B. ;

Lanzalone, G. ;

Pagano, A. ;

Pagano, E. V. ;

Papa, M. ;

Pirrone, S. ;

Politi, G. ;

Porto, F. ;

Quattrocchi, L. ;

Rizzo, F. ;

Rosato, E. ;

Russotto, P. ;

Trifiro, A. ;

Trimarchi, M. ;

Verde, G. ;

Vigilante, M. .

PHYSICAL REVIEW C, 2016, 93 (02)

[8] MICROSCOPIC THEORY OF THE BE-8(ALPHA,GAMMA)C-12 REACTION IN A 3-CLUSTER MODEL [J].

DESCOUVEMONT, P ;

BAYE, D .

PHYSICAL REVIEW C, 1987, 36 (01) :54-59

[9] Resonances in 14C observed in the 4He(10Be,α)10Be reaction [J].

Freer, M. ;

Malcolm, J. D. ;

Achouri, N. L. ;

Ashwood, N. I. ;

Bardayan, D. W. ;

Brown, S. M. ;

Catford, W. N. ;

Chipps, K. A. ;

Cizewski, J. ;

Curtis, N. ;

Jones, K. L. ;

Munoz-Britton, T. ;

Pain, S. D. ;

Soic, N. ;

Wheldon, C. ;

Wilson, G. L. ;

Ziman, V. A. .

PHYSICAL REVIEW C, 2014, 90 (05)

[10] One-dimensionality in atomic nuclei: A candidate for linear-chain α clustering in 14C [J].

Fritsch, A. ;

Beceiro-Novo, S. ;

Suzuki, D. ;

Mittig, W. ;

Kolata, J. J. ;

Ahn, T. ;

Bazin, D. ;

Becchetti, F. D. ;

Bucher, B. ;

Chajecki, Z. ;

Fang, X. ;

Febbraro, M. ;

Howard, A. M. ;

Kanada-En'yo, Y. ;

Lynch, W. G. ;

Mitchell, A. J. ;

Ojaruega, M. ;

Rogers, A. M. ;

Shore, A. ;

Suhara, T. ;

Tang, X. D. ;

Torres-Isea, R. ;

Wang, H. .

PHYSICAL REVIEW C, 2016, 93 (01)

← 1 2 3 4 5 →