Investigating C-13+C-12 Reaction by the Activation Method. Sensitivity Tests
文献类型：会议论文
| 作者 | Trache, L; Chesneanu, D.2; Trache, L.2; Margineanu, R.2; Pantelica, A.2; Ghita, D.2; Straticiuc, M.2; Burducea, I.2; Blebea-Apostu, A. M.2; Gomoiu, C. M.2 |
| 出版日期 | 2015 |
| 卷号 | 1645 |
| DOI | 10.1063/1.4909592 |
| 页码 | 311-316 |
| 英文摘要 | We have performed experiments to check the limits of sensitivity of the activation method using the new 3 MV Tandetron accelerator and the low and ultra-low background laboratories of the "Horia Hulubei" National Institute of Physics and Nuclear Engineering (IFIN-HH). We have used the C-12+C-13 reaction at beam energies E-lab=6, 7 and 8 MeV. The knowledge of this fusion cross section at deep sub-barrier energies is of interest for astrophysical applications, as it provides an upper limit for the fusion cross section of C-12+C-12 over a wide energy range. A C-13 beam with intensities 0.5-2 particle mu A was provided by the accelerator and used to bombard graphite targets, resulting in activation with Na-24 from the C-12(C-13,p) reaction. The 1369 and 2754 keV gamma-rays from Na-24 de-activation were clearly observed in the spectra obtained in two different laboratories used for measurements at low and ultralow background: one at the surface and one located underground in the Unirea salt mine from Slanic Prahova, Romania. In the underground laboratory, for E-lab = 6 MeV we have measured an activity of 0.085 +/- 0.011 Bq, corresponding to cross sections of 1-3 nb. This demonstrates that it is possible to measure C-12 targets irradiated at lower energies for at least 10 times lower cross sections than before. beta-gamma coincidences will lead us another factor of 10 lower, proving that this installations can be successfully used for nuclear astrophysics measurements. |
| 会议录 | EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (V). FROM NUCLEI TO STARS
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| 会议录出版者 | AMER INST PHYSICS |
| 会议录出版地 | 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA |
| 语种 | 英语 |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS记录号 | WOS:000354638700037 |
| 源URL | [http://119.78.100.186/handle/113462/58414]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Chesneanu, D. |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest 077125, Romania |
| 推荐引用方式 GB/T 7714 | Trache, L,Chesneanu, D.,Trache, L.,et al. Investigating C-13+C-12 Reaction by the Activation Method. Sensitivity Tests[C]. 见:. |
入库方式： OAI收割
来源：近代物理研究所
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