Intramolecular Nuclear Fusion in Hydrogen-Isotope Molecules : Atomic and Statistical Physics

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概要

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• The rates of intramolecular fusion in isolated HD, D_2, DT, T_2, HD^+, D_2^+, DT^+, T_2^+, ^3HeD^+ and ^3HeD^<++> molecules are calculated in the Born-Oppenheimer approximation for the molecular bound states with highly accurate electronic potentials. The fusion rates λ_v increase rapidly with the vibrational quantum number v, e.g., λ_4/λ_0≃10^3〜10^4. The neutral-to-ionic fusion-rate ratios λ_v(HD)/λ_v(HD^+), etc., are 10^<10> to 10^<15>. Calculations are carried out also for negative ions HD^-, etc., in resonance states, and the results are found to be almost the same as for the neutral systems. Molecules with the electron mass m_e artificially changed into values m_<eff> have also been considered. For m_<eff>≃5.6 m_e the d-d fusion rate λ_0(D_2^+) for D_2^+ in the ground vibrational state reaches 10^<-23> s^<-1>, a value recently extracted from measurements of 2.5-MeV neutrons from a titanium electrode in heavy water at room temperature after electrolytic infusion of deuterons. The rate λ_0(D_2) reaches this value for m_<eff>≃4.2 m_e, for which λ_0(HD)/λ_0(D_2)≃1×10^1,λ_0(DT)/λ_0(D_2)≃3×10^<-2>, and λ_0(D_2^+)/λ_0(D_2)≃5×10^<-7>.

• 理論物理学刊行会の論文
• 1989-08-25

著者

• Shimamura I

  The Institute Of Physical And Chemical Research

• Shimamura Isao

  The Institute Of Space And Astronautical Science

• SHIMAMURA Isao

  The Institute of Physical and Chemical Research

関連論文

• Intramolecular Nuclear Fusion in Hydrogen-Isotope Molecules : Atomic and Statistical Physics
• Rotational-State Dependence of the Collisional Pumping Rate for Astrophysical Masers

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