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低能氘团簇离子(d+3)诱发固体靶内D-D核聚变过程中的团簇效应研究

王铁山 落合谦太郎 丸田胜彦 饭田敏行 高桥亮人

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低能氘团簇离子(d+3)诱发固体靶内D-D核聚变过程中的团簇效应研究

王铁山, 落合谦太郎, 丸田胜彦, 饭田敏行, 高桥亮人

NUCLEAR CLUSTER EFFECT IN THE INTERACTION OF DEUTERIUM CLUSTER ION (d+3) AND SOLID (PdDx)

WANG TIE-SHAN, KENTARO OCHIAI, KATHUHIKO MARUTA, TOSHIYUKI IIDA, AKITO TAKAHASHI
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  • 通过对由三个氘原子组成的氘团簇离子(d+3)与三个分立的氘核(3d+)在轰击吸氘固体靶时所发生的D-D聚变反应率的差别的研究,进而揭示氘团簇离子在与固体靶中的氘核发生聚变反应时所体现出的团簇效应.实验结果显示,在10—40keV/d能区,每个氘团簇中的氘核(d+3/3)所产生的聚变反应率高于具有相同速度的独立氘核(d+)所产生的聚变反应率.反之,在50—100keV/d能区,独立氘核比之于氘团簇中的单个氘核所产生的聚变反应率要高.两者之间的比值具有非常明显的能量相关性.这种团簇特性与团簇离子本身特性及固体靶环境等多方面因素有关.对其作用过程和实验中观测到的现象的实质做了具体讨论.
    The deuterium cluster-ion, which consists of three deuterons, was used to study the cluster effect in the D-D fusion reaction in solids. The cluster-ion beam (deuteron-cluster d+3) and isolated deuteron (single deuteron d+), whose energies were adjusted as from 10 to 100keV per deuteron, were alternatively implanted into deuterium-palladium target. The differences of the fusion reaction rates were obtained by comparing the radiation yields of charged particles and neutrons that were induced by two kinds of beams with the same velocity. Experimental results are as follows: Each deuteron of cluster-ion (cluster deuteron) induced higher D-D fusion rate, compared with an isolated deuteron, when the deuteron energy was lower than 40keV per deuteron; while the cluster deuteron induced lower fusion rate when its energy was higher than 50keV per deuteron. The ratio of fusion rate induced by cluster deuteron to that induced by isolated deuteron decreased with the increase of deuteron energy. Some interpretations have been discussed.
    • 基金项目: 国家自然科学基金(批准号:19845004)资助的课题.
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出版历程
  • 收稿日期:  1998-01-25
  • 修回日期:  1998-04-13
  • 刊出日期:  1998-06-05

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