Direct observation of the exotic β-γ-α decay mode in the Tz =-1 nucleus 20Na

被引：7

作者：

Wang, Y. B. ^{[1
]}

Su, J. ^{[2
]}

Han, Z. Y. ^{[1
]}

Tang, B. ^{[1
]}

Cui, B. Q. ^{[1
]}

Ge, T. ^{[1
]}

Lyu, Y. L. ^{[1
]}

Brown, B. A. ^{[3
,4
]}

Yuan, C. X. ^{[5
]}

Chen, L. H. ^{[1
]}

Chen, Z. Q. ^{[6
]}

Dai, B. ^{[6
]}

Guo, B. ^{[1
]}

Li, X. Y. ^{[1
]}

Li, Y. J. ^{[1
]}

Li, Z. H. ^{[1
]}

Lian, G. ^{[1
]}

Ma, R. G. ^{[1
]}

Ma, T. L. ^{[1
]}

Ma, X. ^{[1
]}

Nan, D. ^{[1
]}

Shen, Y. P. ^{[1
]}

Su, Y. ^{[1
]}

Wang, C. G. ^{[6
]}

Wu, H. Y. ^{[6
]}

Xu, F. R. ^{[6
]}

Yan, S. Q. ^{[1
]}

Zeng, S. ^{[1
]}

Zhang, H. ^{[1
]}

Zhang, L. ^{[1
]}

Zheng, Y. ^{[1
]}

Zhou, C. ^{[7
]}

Dang, Y. L. ^{[1
]}

Fu, G. Y. ^{[1
]}

He, Y. F. ^{[1
]}

Liu, F. L. ^{[1
]}

Wu, D. ^{[1
]}

Zhang, T. J. ^{[1
]}

Liu, W. P. ^{[1
]}

机构：

[1] China Inst Atom Energy, POB 275 10, Beijing 102413, Peoples R China

[2] Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China

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

[4] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[5] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China

[6] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

[7] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China

来源：

PHYSICAL REVIEW C | 2021年 / 103卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ENERGY-LEVELS; STATE; NE-20; RADIOACTIVITY; BEAM; SPIN;

D O I：

10.1103/PhysRevC.103.L011301

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 exotic beta-gamma-alpha decay mode of Na-20 has been directly observed for the first time in the Day-one experiment at the Beijing Radioactive Ion-beam Facility. The Na-20 source was produced by using a 100-MeV proton beam bombarding a stack of microporous MgO thick target and delivered as an intense mass separated beam after online ionization. A high-efficiency simultaneous measurement of beta, gamma, and alpha transitions enables the beta-delayed gamma-gamma and alpha-gamma coincidence spectroscopy. Three beta-gamma-alpha exotic decay sequences in Na-20 are discovered, which expands the rare decay modes observed in beta decay. Moreover, a beta-alpha-decay sequence to the 6130-keV 3(-) state of O-16 is observed, which is likely through the 12 367-keV 1(+) state in Ne-20. The experimentally deduced B(F) and B(GT) are compared to the shell-model calculation, the allowed beta transition strengths can be well accounted for by using sd shell-model space interactions.

引用

页数：6

共 37 条

[21] First observation of excited states in the Tz=1/2 nucleus 85Mo -: art. no. 034315
Marginean, N
Alvarez, CR
Bucurescu, D
Sun, Y
Ur, CA
Gadea, A
Lunardi, S
Bazzacco, D
de Angelis, G
Axiotis, M
De Poli, M
Farnea, E
Ionescu-Bujor, M
Iordachescu, A
Lenzi, SM
Kröll, T
Martinez, T
Menegazzo, R
Napoli, DR
Nardelli, G
Pavan, P
Quintana, B
Spolaore, P
PHYSICAL REVIEW C, 2002, 65 (03) : 8
[22] 1ST OBSERVATION OF SCISSORS MODE STATES IN AN ODD-MASS NUCLEUS
BAUSKE, I
ARIAS, JM
VONBRENTANO, P
FRANK, A
FRIEDRICHS, H
HEIL, RD
HERZBERG, RD
HOYLER, F
VANISACKER, P
KNEISSL, U
MARGRAF, J
PITZ, HH
WESSELBORG, C
ZILGES, A
PHYSICAL REVIEW LETTERS, 1993, 71 (07) : 975 - 978
[23] Direct Measurement of the Key Ec.m.=456 keV Resonance in the Astrophysical 19Ne(p,γ)20Na Reaction and Its Relevance for Explosive Binary Systems
Wilkinson, R.
Lotay, G.
Lennarz, A.
Ruiz, C.
Christian, G.
Akers, C.
Catford, W. N.
Chen, A. A.
Connolly, D.
Davids, B.
Hutcheon, D. A.
Jedrejcic, D.
Laird, A. M.
Martin, L.
McNeice, E.
Riley, J.
Williams, M.
PHYSICAL REVIEW LETTERS, 2017, 119 (24)
[24] 1ST DIRECT OBSERVATION OF THE DECAY OF NEUTRAL CHARMED PARTICLES PRODUCED BY NEUTRINOS IN EMULSION
ALLASIA, D
ANGELINI, C
BAGNAIA, P
BARONI, G
BARTLEY, JH
BERTRANDCOREMANS, G
BISI, V
BRESLIN, A
BURHOP, EHS
CARENA, F
CASALI, R
CIAPETTI, G
CONVERSI, M
DAVIS, DH
DILIBERTO, S
FANTECHI, R
FERRER, ML
FRANZINETTI, C
GAMBA, D
GODFREY, L
KEANE, D
LAMANNA, E
MARZARI, A
MARZANO, F
MONTWILL, A
NAPPI, A
PALAZZICERRINA, C
PAZZI, R
PETRERA, S
PIERAZZINI, GM
ROMANO, G
ROMERO, A
SACTON, J
SANTONICO, R
SEVER, R
STANNARD, FR
TOLUN, P
TOVEE, DN
VILAIN, P
WICKENS, JH
WILQUET, G
PHYSICS LETTERS B, 1979, 87 (03) : 287 - 291
[25] LIFETIME OF CHARGED CHARMED PARTICLES 1ST DIRECT OBSERVATION OF A CHARMED BARYON DECAY
ANGELINI, C
BAGNAIA, P
BARONI, G
BARTLEY, JH
BERTRANDCOREMANS, G
BISI, V
BRESLIN, A
BURHOP, EHS
CARENA, F
CASALI, R
CIAPETTI, G
CONVERSI, M
DAVIS, DH
DILIBERTO, S
FERRER, ML
FRANZINETTI, C
GAMBA, D
GODFREY, L
KEANE, D
LAMANNA, E
MARZARI, A
MARZANO, F
MONTWILL, A
MORGANTI, R
NAPPI, A
PALAZZICERRINA, C
PAZZI, R
PETRERA, S
PIERAZZINI, GM
RICCATI, L
ROMANO, G
ROMERO, A
SACTON, J
SANTONICO, R
SEVER, R
STANNARD, FR
TOLUN, P
TOVEE, DN
VILAIN, P
WICKENS, JH
WILQUET, G
PHYSICS LETTERS B, 1979, 84 (01) : 150 - 155
[26] DIRECT OBSERVATION OF THE DECAY MODE K-2-OMICRON-]PI-OMICRON PI-OMICRON PI-OMICRON
AUBERT, B
BEHR, L
BRISSON, V
MITTNER, P
PETIAU, P
CALIMANI, E
CIAMPOLILLO, S
FILIPPIFILOSOFO, C
LEARDINI, M
SCONZA, A
PHYSICS LETTERS, 1964, 10 (02): : 250 - 251
[27] OBSERVATION OF PPIPI DECAY MODE OF N1/2'(1400) RESONANCE IN PP INTERACTIONS AT 22 GEV/C'
JESPERSEN, RA
KANG, YW
KERNAN, WJ
LEACOCK, RA
RHODE, JI
SCHALK, TL
SCHROEDER, LS
PHYSICAL REVIEW LETTERS, 1968, 21 (18) : 1368 - +
[28] 1ST DIRECT OBSERVATION OF FEL LASING FROM LAMBDA = 20 TO 45 MU-M
LUMPKIN, AH
FELDMAN, DW
SOLLID, JE
WARREN, RW
STEIN, WE
JOHNSON, WJ
WATSON, JM
NEWNAM, BE
GOLDSTEIN, JC
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 296 (1-3): : 181 - 185
[29] DIRECT OBSERVATION OF 2-MODE LO (GAMMA) PHONONS AT HIGH-CONCENTRATIONS OF ISOTOPES IN LIH1-XDX
PLEKHANOV, VG
OPTIKA I SPEKTROSKOPIYA, 1993, 75 (01): : 51 - 53
[30] 1ST OBSERVATION OF THE SIGMA-PI+PI+ DECAY MODE OF THE LAMBDA-C BARYON AND ITS BRANCHING RATIO RELATIVE TO THE SIGMA+PI+PI- MODE
FRABETTI, PL
CHEUNG, HWK
CUMALAT, JP
DALLAPICCOLA, C
GINKEL, JF
GREENE, SV
JOHNS, WE
NEHRING, MS
BUTLER, JN
CIHANGIR, S
GAINES, I
GARBINCIUS, PH
GARREN, L
GOURLAY, SA
HARDING, DJ
KASPER, P
KREYMER, A
LEBRUN, P
SHUKLA, S
BIANCO, S
FABBRI, FL
SARWAR, S
ZALLO, A
CULBERTSON, R
GARDNER, RW
GREENE, R
WISS, J
ALIMONTI, G
BELLINI, G
CACCIANIGA, B
CINQUINI, L
DICORATO, M
GIAMMARCHI, M
INZANI, P
LEVERARO, F
MALVEZZI, S
MENASCE, D
MERONI, E
MORONI, L
PEDRINI, D
PERASSO, L
SALA, A
SALA, S
TORRETTA, D
VITTONE, M
BUCHHOLZ, D
CLAES, D
GOBBI, B
OREILLY, B
BISHOP, JM
PHYSICS LETTERS B, 1994, 328 (1-2) : 193 - 198

← 1 2 3 4 →