Parity nonconservation in neutron resonances in 232Th
Physical Review C - Nuclear Physics 58 巻 2 号
1236-1246 頁
1998-10 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Parity nonconservation in neutron resonances in 232Th
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| 作成者 |
Stephenson S. L.
Bowman J. D.
Crawford B. E.
Delheij P. P. J.
Frankle C. M.
Knudson J. N.
Lowie L. Y.
Masaike Akira
Matsuda Yasuyuki
Mitchell G. E.
Penttilä S. I.
Postma H.
Roberson N. R.
Seestrom S. J.
Sharapov E. I.
Yen Y.-F.
Yuan V.W.
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| 収録物名 |
Physical Review C - Nuclear Physics
|
| 巻 | 58 |
| 号 | 2 |
| 開始ページ | 1236 |
| 終了ページ | 1246 |
| 抄録 |
Parity nonconservation (PNC) was measured for 24 p-wave resonances from 8 to 300 eV in 232Th by measuring the helicity dependence of the total neutron cross section for epithermal neutrons with an improved experimental system. Ten resonances show statistically significant parity violation. For these ten resonances the analyzing powers are all positive, thus confirming the previously observed sign correlation. The data are fit to the sum of two terms, a constant asymmetry and a fluctuating asymmetry. With this ansatz the root-mean-square PNC matrix element M = 1.12 meV, which corresponds to a weak spreading width Γw = 4.7× 10-7 eV. For the neighboring nuclide 238U there is no constant offset, suggesting that the sign correlation is specific to 232Th.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 1998-10 |
| 権利情報 |
Copyright (c) 1998 The American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0556-2813
[DOI] 10.1103/PhysRevC.58.1236
[NCID] AA00773613
[DOI] http://dx.doi.org/10.1103/PhysRevC.58.1236
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