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Title: Theoretical studies on the stopping power of deuterium-tritium mixed with uranium plasmas for α particles

The stopping power of a compressed and highly ionized deuterium-tritium (DT) and uranium (U) plasma for α particles at very high temperatures (T = 5 keV) is examined theoretically with the dimensional continuation method. We show that with increasing density of U, both the magnitude and width of the resonance peak in the stopping power (as a function of the α particle energy), increases because of the ions, while the penetration distance of the α particles decreases. A simple relation of decreasing penetration distance as a function of plasma density is observed, which may be useful for inertial confinement fusion experiments. Moreover, by comparing the results with the case of a DT plasma mixed with beryllium, we find that the effect of a higher Z plasma is stronger, with regard to energy loss as well as the penetration distance of α particles, than that of a lower Z plasma.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [3]
  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)
  2. Research Center for Fusion Energy Science and Technology, China Academy of Engineering Physics, Beijing 100088 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22299666
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BERYLLIUM; COMPARATIVE EVALUATIONS; DEUTERIUM; ENERGY LOSSES; INERTIAL CONFINEMENT; KEV RANGE 01-10; PLASMA DENSITY; STOPPING POWER; TRITIUM; URANIUM