| DOI: | 10.2172/1242960
|
| 报告号: | DOE/NEUP--12-3411
|
| 报告题名: | Elastic/Inelastic Measurement Project |
| 作者: | Yates, Steven; Hicks, Sally; Vanhoy, Jeffrey; McEllistrem, Marcus
|
| 出版年: | 2016
|
| 发表日期: | 2016-03-01
|
| 总页数: | 30
|
| 国家: | 美国
|
| 语种: | 英语
|
| 中文主题词: | 散射
; 同位素
; 铁
; 钠
|
| 主题词: | SCATTERING
; ISOTOPES
; IRON
; SODIUM
|
| 英文摘要: | The work scope involves the measurement of neutron scattering from natural sodium (23Na) and two isotopes of iron, 56Fe and 54Fe. Angular distributions, i.e., differential cross sections, of the scattered neutrons will be measured for 5 to 10 incident neutron energies per year. The work of the first year concentrates on 23Na, while the enriched iron samples are procured. Differential neutron scattering cross sections provide information to guide nuclear reaction model calculations in the low-Âenergy (few MeV) fast-Âneutron region. This region lies just above the isolated resonance region, which in general is well studied; however, model calculations are difficult in this region because overlapping resonance structure is evident and direct nuclear reactions are becoming important. The standard optical model treatment exhibits good predictive ability for the wide-Âregion average cross sections but cannot treat the overlapping resonance features. In addition, models that do predict the direct reaction component must be guided by measurements to describe correctly the strength of the direct component, e.g., β2 must be known to describe the direct component of the scattering to the first excited state. Measurements of the elastic scattering differential cross sections guide the optical model calculations, while inelastic differential cross sections provide the crucial information for correctly describing the direct component. Activities occurring during the performance period are described. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1242960
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/42217
|
| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| File Name/ File Size |
Content Type |
Version |
Access |
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| 1242960.pdf（1244KB） | 研究报告 | -- | 开放获取 | | View
Download
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| Recommended Citation: | |
Yates, Steven,Hicks, Sally,Vanhoy, Jeffrey,et al. Elastic/Inelastic Measurement Project. 2016-01-01.
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