Confirmation/Observation of Hindered E2 Strengths in <sup>16,18</sup>C

H.J.Ong; N.Imai; D.Suzuki; H.Iwasaki; H.Sakurai; et al.

doi:10.11804/NuclPhysRev.26.S1.070

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Confirmation/Observation of Hindered E2 Strengths in ^16,18C

H.J.Ong, N.Imai, D.Suzuki, H.Iwasaki, H.Sakurai, et al.

文章导航 > 原子核物理评论 > 2009 > 26(5): 70-74

H.J.Ong, N.Imai, D.Suzuki, H.Iwasaki, H.Sakurai, et al.. Confirmation/Observation of Hindered E2 Strengths in 16,18C[J]. 原子核物理评论, 2009, 26(5): 70-74. doi: 10.11804/NuclPhysRev.26.S1.070

引用本文:

H.J.Ong, N.Imai, D.Suzuki, H.Iwasaki, H.Sakurai, et al.. Confirmation/Observation of Hindered E2 Strengths in ^16,18C[J]. 原子核物理评论, 2009, 26(5): 70-74. doi: 10.11804/NuclPhysRev.26.S1.070

H.J.Ong, N.Imai, D.Suzuki, H.Iwasaki, H.Sakurai, et al.. Confirmation/Observation of Hindered E2 Strengths in 16,18C[J]. Nuclear Physics Review, 2009, 26(5): 70-74. doi: 10.11804/NuclPhysRev.26.S1.070

Citation:

H.J.Ong, N.Imai, D.Suzuki, H.Iwasaki, H.Sakurai, et al.. Confirmation/Observation of Hindered E2 Strengths in 16,18C[J]. Nuclear Physics Review, 2009, 26(5): 70-74. doi: 10.11804/NuclPhysRev.26.S1.070

Confirmation/Observation of Hindered E2 Strengths in ^16,18C

doi: 10.11804/NuclPhysRev.26.S1.070

H.J.Ong¹,
N.Imai²,
D.Suzuki³,
H.Iwasaki³,
H.Sakurai^{3, 4},
et al.

1 RCNP, Osaka University, 101 Mihogaoka, Ibaraki, 5670047 Osaka, Japan; 2 KEK, Oho 11, Tsukuba, Ibaraki 3050801, Japan; 3 Department of Physics, University of Tokyo, Hongo 731, Bunkyo, Tokyo 1130033, Japan; 4 RIKEN Nishina Center, RIKEN, Hirosawa 21, Wako, Saitama 3510198, Japan; 5 CNS, University of Tokyo, RIKEN Campus, Hirosawa 21, Wako, Saitama 3510198, Japan; 6 Department of Physics, Rikkyo University, NishiIkebukuro 3341, Toshima, Tokyo 1718501, Japan; 7 Department of Physics, Tokyo Institute of Technology, Ookayama 2121, Meguro, Tokyo 1528551, Japan

Confirmation/Observation of Hindered E2 Strengths in 16,18C

H.J.Ong¹,
N.Imai²,
D.Suzuki³,
H.Iwasaki³,
H.Sakurai^{3, 4},
et al.

1 RCNP, Osaka University, 101 Mihogaoka, Ibaraki, 5670047 Osaka, Japan; 2 KEK, Oho 11, Tsukuba, Ibaraki 3050801, Japan; 3 Department of Physics, University of Tokyo, Hongo 731, Bunkyo, Tokyo 1130033, Japan; 4 RIKEN Nishina Center, RIKEN, Hirosawa 21, Wako, Saitama 3510198, Japan; 5 CNS, University of Tokyo, RIKEN Campus, Hirosawa 21, Wako, Saitama 3510198, Japan; 6 Department of Physics, Rikkyo University, NishiIkebukuro 3341, Toshima, Tokyo 1718501, Japan; 7 Department of Physics, Tokyo Institute of Technology, Ookayama 2121, Meguro, Tokyo 1528551, Japan

摘要: The lifetime of the first excited 2+ state in 18C was measured using an upgraded recoil shadow method to determine the electric quadrupole transition. The measured mean lifetime is 18.9 ±0.9(stat)±4.4(syst)ps, which corresponds to a B(E2; 2+1→0+gs) value of (4.3± 0.2 ±1.0) e2fm4, or about 1.5 Weisskopf units. The mean lifetime of the first 2+ state in 16C was remeasured to be about 18 ps, about four times shorter than the value reported previously. This discrepancy was explained by incorporating the γray angular distribution measured in this work into the previous measurement. The observed transition strengths in 16,18C are hindered compared to the empirical transition strengths, indicating that the anomalous hindrance observed in 16C persists in 18C.
- neutronrichnuclei /
- lifetimemeasurement /
- B(E2)
Abstract: The lifetime of the first excited 2+ state in 18C was measured using an upgraded recoil shadow method to determine the electric quadrupole transition. The measured mean lifetime is 18.9 ±0.9(stat)±4.4(syst)ps, which corresponds to a B(E2; 2+1→0+gs) value of (4.3± 0.2 ±1.0) e2fm4, or about 1.5 Weisskopf units. The mean lifetime of the first 2+ state in 16C was remeasured to be about 18 ps, about four times shorter than the value reported previously. This discrepancy was explained by incorporating the γray angular distribution measured in this work into the previous measurement. The observed transition strengths in 16,18C are hindered compared to the empirical transition strengths, indicating that the anomalous hindrance observed in 16C persists in 18C.
- neutronrich nuclei /
- lifetime measurement /
- B(E2)

点击查看大图

计量

文章访问数: 2301
HTML全文浏览量: 121
PDF下载量: 570
被引次数: 0

Confirmation/Observation of Hindered E2 Strengths in ^16,18C

doi: 10.11804/NuclPhysRev.26.S1.070

1 RCNP, Osaka University, 101 Mihogaoka, Ibaraki, 5670047 Osaka, Japan; 2 KEK, Oho 11, Tsukuba, Ibaraki 3050801, Japan; 3 Department of Physics, University of Tokyo, Hongo 731, Bunkyo, Tokyo 1130033, Japan; 4 RIKEN Nishina Center, RIKEN, Hirosawa 21, Wako, Saitama 3510198, Japan; 5 CNS, University of Tokyo, RIKEN Campus, Hirosawa 21, Wako, Saitama 3510198, Japan; 6 Department of Physics, Rikkyo University, NishiIkebukuro 3341, Toshima, Tokyo 1718501, Japan; 7 Department of Physics, Tokyo Institute of Technology, Ookayama 2121, Meguro, Tokyo 1528551, Japan

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2020-05-11

关键词:

neutronrichnuclei /

lifetimemeasurement /

B(E2)

摘要: The lifetime of the first excited 2+ state in 18C was measured using an upgraded recoil shadow method to determine the electric quadrupole transition. The measured mean lifetime is 18.9 ±0.9(stat)±4.4(syst)ps, which corresponds to a B(E2; 2+1→0+gs) value of (4.3± 0.2 ±1.0) e2fm4, or about 1.5 Weisskopf units. The mean lifetime of the first 2+ state in 16C was remeasured to be about 18 ps, about four times shorter than the value reported previously. This discrepancy was explained by incorporating the γray angular distribution measured in this work into the previous measurement. The observed transition strengths in 16,18C are hindered compared to the empirical transition strengths, indicating that the anomalous hindrance observed in 16C persists in 18C.

English Abstract

Confirmation/Observation of Hindered E2 Strengths in 16,18C

1 RCNP, Osaka University, 101 Mihogaoka, Ibaraki, 5670047 Osaka, Japan; 2 KEK, Oho 11, Tsukuba, Ibaraki 3050801, Japan; 3 Department of Physics, University of Tokyo, Hongo 731, Bunkyo, Tokyo 1130033, Japan; 4 RIKEN Nishina Center, RIKEN, Hirosawa 21, Wako, Saitama 3510198, Japan; 5 CNS, University of Tokyo, RIKEN Campus, Hirosawa 21, Wako, Saitama 3510198, Japan; 6 Department of Physics, Rikkyo University, NishiIkebukuro 3341, Toshima, Tokyo 1718501, Japan; 7 Department of Physics, Tokyo Institute of Technology, Ookayama 2121, Meguro, Tokyo 1528551, Japan

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2020-05-11

Keywords:

Abstract: The lifetime of the first excited 2+ state in 18C was measured using an upgraded recoil shadow method to determine the electric quadrupole transition. The measured mean lifetime is 18.9 ±0.9(stat)±4.4(syst)ps, which corresponds to a B(E2; 2+1→0+gs) value of (4.3± 0.2 ±1.0) e2fm4, or about 1.5 Weisskopf units. The mean lifetime of the first 2+ state in 16C was remeasured to be about 18 ps, about four times shorter than the value reported previously. This discrepancy was explained by incorporating the γray angular distribution measured in this work into the previous measurement. The observed transition strengths in 16,18C are hindered compared to the empirical transition strengths, indicating that the anomalous hindrance observed in 16C persists in 18C.

H.J.Ong, N.Imai, D.Suzuki, H.Iwasaki, H.Sakurai, et al.. Confirmation/Observation of Hindered E2 Strengths in 16,18C[J]. 原子核物理评论, 2009, 26(5): 70-74. doi: 10.11804/NuclPhysRev.26.S1.070

引用本文: