Project/Area Number  04455010 
Research Category 
GrantinAid for Scientific Research (B).

Research Field 
広領域

Research Institution  The University of Tokyo 
Principal Investigator 
ICHIMARU Setsuo The University of Tokyo, Graduate School of Science Professor, 大学院・理学系研究科, 教授 (80010734)

CoInvestigator(Kenkyūbuntansha) 
OGATA Shuji The University of Tokyo Graduate School of Science Research Assistant, 大学院・理学系研究科, 助手 (90251404)
家富 洋 東京大学, 理学部, 助手 (20168090)

Project Fiscal Year 
1992 – 1994

Project Status 
Completed(Fiscal Year 1994)

Budget Amount *help 
¥3,600,000 (Direct Cost : ¥3,600,000)
Fiscal Year 1994 : ¥1,000,000 (Direct Cost : ¥1,000,000)
Fiscal Year 1993 : ¥1,200,000 (Direct Cost : ¥1,200,000)
Fiscal Year 1992 : ¥1,400,000 (Direct Cost : ¥1,400,000)

Keywords  Dense Plasma / Equation of State / Astrophysical Dense Matter / Partially Ionized Matter / Electric and Thermal Transport / Radiative Transport / Ultrahigh Pressure Metal / Nuclear Fusion / 高密度プラズマ / 状態方程式・相図 / 天体内部物質 / 部分電離プラズマ / 電気・熱伝導度 / 輻射輸送 / 超高圧金属 / 核融合 / 高密度天体 / 状態方程式 / 相転移 / 電気・熱伝導 / 高密度星内部物質 / 電子液体 / スピン分極 / 多種イオン / 相図 / 白色矮星 / プラズマ・ニュートリノ過程 / 密度汎関数法 / 不純物原子 
Research Abstract 
Followings are the new findings : 1. Equation of State and Phase Diagrams for Dense MultiIonic Mixture Plasmas Equations of state for dense multiionic mixture plasmas were evaluated for both fluid and solid phases by the Monte Carlo simulation method. The accuracy of the results has been confirmed through a sumrule analysis of the free energy. Phase diagrams for various BIMs appropriate to whitedwarf interiors were constructed. 2.Equation of State, Metallization, and Energy Transport in Dense Stellar Matter Equations of state for partially ionized dense stellar matter were investigated by taking into account physical effects of strong coupling between atoms and plasma particles. Electric and thermal resistivities and freefree opacities were calculated in such matter. 3. Thermal Enhancement of Pycnonuclear Reaction rates in Dense Coulomb Solids Through a numerical solution to the Schrodinger equation of scattering between nearestneighbor nuclei in the lattice potential, the thermal enhancement factor of the pycnonuclear rates were newly evaluated for the entire densitytemperature domain of Coulomb solids. 4. Nuclear Fusion in Dense Ultrahigh Pressure Metals Combining concepts of pycnonuclear reactions at low temperatures and their enhancement due to strong internuclear Coulombic correlations, we presented concrete cases of a "supernova on the earth" scheme for fusion researches. 5. Equation of State and Melting Transition in Quantum CoulombSolids The free energy of a onecomponent plasma in a crystalline state was calculated by a quantum Monte Carlo simulation method. The freeenergy formula were applied for calculation of the melting curves in dense carbon and helium materials. 6. ClusterModel Study of ManyBody Correlations in Dense Coulomb Matter Equations of state for Coulomb clusters (number of particles are 2 to 60) were evaluated by a simulation method. A novel model for the Coulomb fiuid was thereby constructed.
