• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Low Temperature Physics >Determination of Nuclear Charge Distributions of Fission Fragments from U (, f) with Calorimetric Low Temperature Detectors
【24h】

Determination of Nuclear Charge Distributions of Fission Fragments from U (, f) with Calorimetric Low Temperature Detectors

机译：用量热低温探测器确定U（，f）裂变碎片的核电荷分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Calorimetric low temperature detectors (CLTD's) for heavy-ion detection have been combined with the LOHENGRIN recoil separator at the ILL Grenoble for the determination of nuclear charge distributions of fission fragments produced by thermal neutron-induced fission of U. The LOHENGRIN spectrometer separates fission fragments according to their mass-to-ionic-charge ratio and their kinetic energy, but has no selectivity with respect to nuclear charges Z. For the separation of the nuclear charges, one can exploit the nuclear charge-dependent energy loss of the fragments passing through an energy degrader foil (absorber method). This separation requires detector systems with high energy resolution and negligible pulse height defect, as well as degrader foils which are optimized with respect to thickness, homogeneity, and energy loss straggling. In the present, contribution results of test measurements at the Maier Leibnitz tandem accelerator facility in Munich with Ag and I beams with the aim to determine the most suitable degrader material, as well as measurements at the Institut Laue-Langevin will be presented. These include a systematic study of the quality of Z-separation of fission fragments in the mass range and a systematic measurement of Rb fission yields, as well as investigations of fission yields toward the symmetry region.
机译：用于重离子检测的量热低温探测器（CLTD）与ILL格勒诺布尔的LOHENGRIN反冲分离器结合使用，用于确定由热中子引起的U裂变产生的裂变碎片的核电荷分布。LOHENGRIN光谱仪可分离裂变碎片根据它们的质荷比和动能，但对核电荷Z没有选择性。对于核电荷的分离，可以利用经过核的碎片的依赖于核电荷的能量损失能量降解箔（吸收法）。这种分离需要具有高能量分辨率和可忽略的脉冲高度缺陷的检测器系统，以及在厚度，均匀性和散失能量方面都经过优化的降质箔。目前，将介绍在慕尼黑的Maier Leibnitz串联加速器设施中使用Ag和I射线进行测试的结果，以确定最合适的降解材料，以及Laue-Langevin研究所的测量结果。这些包括对质量范围内裂变碎片Z分离质量的系统研究和对Rb裂变产率的系统测量，以及对对称区域的裂变产率的研究。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号