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Structure of light proton-rich nuclei on the drip-line

Abstract

Among proton-rich unstable nuclei on the light proton drip-line, nuclear structure of {sup 21}Mg, {sup 17}Ne, {sup 13}O, {sup 11}N and {sup 9}C have been investigated by the three-neutron pick-up reaction ({sup 3}He,{sup 6}He). The angular distributions measured for this reaction have shown a characteristic feature of a transferred angular-momentum (L) dependence, which provides spin-parity assignments for the new levels in these nuclei. Here, the results on the nuclear structure of {sup 17}Ne and {sup 11}N are reported. The nucleus {sup 17}Ne we almost unknown before, except that the mass excess had been determined and a few states had been suggested. Many T = 3/2 states were known in the other three members ({sup 17}N, {sup 17}O and {sup 17}F). Thus, the inclusion of the data on {sup 17}Ne levels has enabled an extensive analysis in terms of the Isobaric Multiplet Mass Equation (IMME) for several excited state quartets. This is the first report on such an extensive analysis in the same mass ststem for a wide range in excitation energy. The {sup 11}N nucleus was investigated to learn about the structure of A 11 system. This mass has been intensively studied, specially because of the halo structure observed in  More>>
Authors:
Guimaraes, V; [1]  Kubono, S; [1]  Hosaka, M; [1]  Ikeda, N; [1]  Jeong, S C; [1]  Katayama, I; [1]  Miyachi, T; [1]  Nomura, T; [1]  Tanaka, M H; [1]  Fuchi, Y; [1]  Kawashima, H; [1]  Ohkawa, S; [1]  Kato, S; [2]  Toyokawa, H; [3]  Yun, C C; [4]  Niizeki, T; [4]  Ito, K; [5]  Kishida, T; [6]  Kubo, T; [6]  Pu, Y; [6]  Ohura, M; [6]  Orihara, H; [7]  Terakawa, T; [7]  Hamada, S; [8]  Hirai, M
  1. Tokyo Univ., Tanashi (Japan). Inst. for Nuclear Study
  2. Physics Department, Yamagata University, Yamagata 990 (Japan)
  3. Physics Department, University of Tsukuba, Tsukuba 305 (Japan)
  4. Physics Department, Tokyo Inst. of Technology, Meguro, Tokyo 152 (Japan)
  5. Physics Department, Tohoku University, Aoba, Sendai 980-77 (Japan)
  6. Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-01 (Japan)
  7. Cyclotron and Radioisotope Center, Tohoku University, Aoba, Sendai 980-77 (Japan)
  8. Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-11 (Japan)
Publication Date:
May 29, 1995
Product Type:
Journal Article
Report Number:
CONF-9410298-
Reference Number:
SCA: 663110; 663520; 663440; 663530; PA: AIX-26:064704; EDB-95:132884; SN: 95001458650
Resource Relation:
Journal Name: Nuclear Physics, A; Journal Volume: 588; Journal Issue: 1; Conference: 5. international symposium on physics of unstable nuclei, Niigata (Japan), 31 Oct - 3 Nov 1994; Other Information: PBD: 29 May 1995
Subject:
66 PHYSICS; HELIUM 3 REACTIONS; THREE-NUCLEON TRANSFER REACTIONS; NEON 17; SPIN; NEON 20 TARGET; NITROGEN 11; NITROGEN 14 TARGET; ANGULAR DISTRIBUTION; ANGULAR MOMENTUM TRANSFER; ENERGY SPECTRA; EXCITED STATES; EXPERIMENTAL DATA; ISOBARIC ANALOGS; MEV RANGE 10-100; MULTIPLETS; NEUTRON TRANSFER; NEUTRON-DEFICIENT ISOTOPES; NUCLEAR STRUCTURE; PARITY; PICKUP REACTIONS
OSTI ID:
101338
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: NUPABL; ISSN 0375-9474; TRN: NL95FE988064704
Submitting Site:
NLN
Size:
pp. 161C-164C
Announcement Date:
Oct 05, 1995

Citation Formats

Guimaraes, V, Kubono, S, Hosaka, M, Ikeda, N, Jeong, S C, Katayama, I, Miyachi, T, Nomura, T, Tanaka, M H, Fuchi, Y, Kawashima, H, Ohkawa, S, Kato, S, Toyokawa, H, Yun, C C, Niizeki, T, Ito, K, Kishida, T, Kubo, T, Pu, Y, Ohura, M, Orihara, H, Terakawa, T, Hamada, S, and Hirai, M. Structure of light proton-rich nuclei on the drip-line. Netherlands: N. p., 1995. Web. doi:10.1016/0375-9474(95)00117-J.
Guimaraes, V, Kubono, S, Hosaka, M, Ikeda, N, Jeong, S C, Katayama, I, Miyachi, T, Nomura, T, Tanaka, M H, Fuchi, Y, Kawashima, H, Ohkawa, S, Kato, S, Toyokawa, H, Yun, C C, Niizeki, T, Ito, K, Kishida, T, Kubo, T, Pu, Y, Ohura, M, Orihara, H, Terakawa, T, Hamada, S, & Hirai, M. Structure of light proton-rich nuclei on the drip-line. Netherlands. https://doi.org/10.1016/0375-9474(95)00117-J
Guimaraes, V, Kubono, S, Hosaka, M, Ikeda, N, Jeong, S C, Katayama, I, Miyachi, T, Nomura, T, Tanaka, M H, Fuchi, Y, Kawashima, H, Ohkawa, S, Kato, S, Toyokawa, H, Yun, C C, Niizeki, T, Ito, K, Kishida, T, Kubo, T, Pu, Y, Ohura, M, Orihara, H, Terakawa, T, Hamada, S, and Hirai, M. 1995. "Structure of light proton-rich nuclei on the drip-line." Netherlands. https://doi.org/10.1016/0375-9474(95)00117-J.
@misc{etde_101338,
title = {Structure of light proton-rich nuclei on the drip-line}
author = {Guimaraes, V, Kubono, S, Hosaka, M, Ikeda, N, Jeong, S C, Katayama, I, Miyachi, T, Nomura, T, Tanaka, M H, Fuchi, Y, Kawashima, H, Ohkawa, S, Kato, S, Toyokawa, H, Yun, C C, Niizeki, T, Ito, K, Kishida, T, Kubo, T, Pu, Y, Ohura, M, Orihara, H, Terakawa, T, Hamada, S, and Hirai, M}
abstractNote = {Among proton-rich unstable nuclei on the light proton drip-line, nuclear structure of {sup 21}Mg, {sup 17}Ne, {sup 13}O, {sup 11}N and {sup 9}C have been investigated by the three-neutron pick-up reaction ({sup 3}He,{sup 6}He). The angular distributions measured for this reaction have shown a characteristic feature of a transferred angular-momentum (L) dependence, which provides spin-parity assignments for the new levels in these nuclei. Here, the results on the nuclear structure of {sup 17}Ne and {sup 11}N are reported. The nucleus {sup 17}Ne we almost unknown before, except that the mass excess had been determined and a few states had been suggested. Many T = 3/2 states were known in the other three members ({sup 17}N, {sup 17}O and {sup 17}F). Thus, the inclusion of the data on {sup 17}Ne levels has enabled an extensive analysis in terms of the Isobaric Multiplet Mass Equation (IMME) for several excited state quartets. This is the first report on such an extensive analysis in the same mass ststem for a wide range in excitation energy. The {sup 11}N nucleus was investigated to learn about the structure of A 11 system. This mass has been intensively studied, specially because of the halo structure observed in {sup 11}Li and the spin parity-inversion of the {sup 11}Be ground-state. The {sup 11}N nucleus was totally unknown before except for the possible ground state.}
doi = {10.1016/0375-9474(95)00117-J}
journal = []
issue = {1}
volume = {588}
journal type = {AC}
place = {Netherlands}
year = {1995}
month = {May}
}