The Experts below are selected from a list of 87 Experts worldwide ranked by ideXlab platform
Young-dae Jung - One of the best experts on this subject based on the ideXlab platform.
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quantum shielding effects on the gamow penetration factor for Nuclear Fusion Reaction in quantum plasmas
Physics of Plasmas, 2017Co-Authors: Myoungjae Lee, Young-dae JungAbstract:The quantum shielding effects on the Nuclear Fusion Reaction process are investigated in quantum plasmas. The closed expression of the classical turning point for the Gamow penetration factor in quantum plasmas is obtained by the Lambert W-function. The closed expressions of the Gamow penetration factor and the cross section for the Nuclear Fusion Reaction in quantum plasmas are obtained as functions of the plasmon energy and the relative kinetic energy by using the effective interaction potential with the WKB analysis. It is shown that the influence of quantum screening suppresses the Sommerfeld Reaction factor. It is also shown that the Gamow penetration factor increases with an increase of the plasmon energy. It is also shown that the quantum shielding effect enhances the deuterium formation by the proton-proton Reaction in quantum plasmas. In addition, it is found that the energy dependences on the Reaction cross section and the Gamow penetration factor are more significant in high plasmon-energy domains.
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quantum shielding effects on the gamow penetration factor for Nuclear Fusion Reaction in quantum plasmas
Physics of Plasmas, 2017Co-Authors: Myoungjae Lee, Young-dae JungAbstract:The quantum shielding effects on the Nuclear Fusion Reaction process are investigated in quantum plasmas. The closed expression of the classical turning point for the Gamow penetration factor in quantum plasmas is obtained by the Lambert W-function. The closed expressions of the Gamow penetration factor and the cross section for the Nuclear Fusion Reaction in quantum plasmas are obtained as functions of the plasmon energy and the relative kinetic energy by using the effective interaction potential with the WKB analysis. It is shown that the influence of quantum screening suppresses the Sommerfeld Reaction factor. It is also shown that the Gamow penetration factor increases with an increase of the plasmon energy. It is also shown that the quantum shielding effect enhances the deuterium formation by the proton-proton Reaction in quantum plasmas. In addition, it is found that the energy dependences on the Reaction cross section and the Gamow penetration factor are more significant in high plasmon-energy domains.The quantum shielding effects on the Nuclear Fusion Reaction process are investigated in quantum plasmas. The closed expression of the classical turning point for the Gamow penetration factor in quantum plasmas is obtained by the Lambert W-function. The closed expressions of the Gamow penetration factor and the cross section for the Nuclear Fusion Reaction in quantum plasmas are obtained as functions of the plasmon energy and the relative kinetic energy by using the effective interaction potential with the WKB analysis. It is shown that the influence of quantum screening suppresses the Sommerfeld Reaction factor. It is also shown that the Gamow penetration factor increases with an increase of the plasmon energy. It is also shown that the quantum shielding effect enhances the deuterium formation by the proton-proton Reaction in quantum plasmas. In addition, it is found that the energy dependences on the Reaction cross section and the Gamow penetration factor are more significant in high plasmon-energy domains.
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Penetration Factor for Nuclear Fusion Reaction in Nonthermal Astrophysical Plasmas
Publications of the Astronomical Society of Japan, 2011Co-Authors: Young-dae JungAbstract:The nonthermal effects on the Nuclear Fusion Reaction process are investigated in Lorentzian astrophysical plasmas. The closed expression of the classical turning point in Lorentzian plasmas is obtained by the Lambert W -function. Using the WKB analysis with the effective screening length, the closed expressions of the Fusion penetration factor and the cross section for the Nuclear Fusion Reaction in Lorentzian plasmas are obtained as functions of the spectral index, relative kinetic energy, and plasma parameters. It is shown that the nonthermal character of the Lorentzian plasma enhances the Fusion penetration factor. In addition, the nonthermal effect on the penetration factor is found to be more significant in plasmas with higher densities. It would be expected that the Fusion Reaction rates of the p–p chain and the CNO cycle in nonthermal plasmas are always greater than those in thermal Maxwellian plasmas.
Jonathan L. Rosner - One of the best experts on this subject based on the ideXlab platform.
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quark level analogue of Nuclear Fusion with doubly heavy baryons
Nature, 2017Co-Authors: Marek Karliner, Jonathan L. RosnerAbstract:Two singly charmed baryons can fuse into the recently discovered doubly charmed baryon and a neutron through an exothermic Reaction analogous to the Nuclear Fusion between deuterium and tritium. The LHCb collaboration at CERN's Large Hadron Collider recently reported the discovery of a doubly charmed baryon with a large binding energy between the two charm quarks inside it. Marek Karliner and Jonathan Rosner report that this strong binding energy allows for a rearrangement of the quarks that releases energy in a quark-level analogue of deuterium–tritium Nuclear Fusion. They point out that the even larger binding energy between two bottom quarks can also enable such an exothermic rearrangement, with a considerably larger energy release. The essence of Nuclear Fusion is that energy can be released by the rearrangement of nucleons between the initial- and final-state nuclei. The recent discovery1 of the first doubly charmed baryon , which contains two charm quarks (c) and one up quark (u) and has a mass of about 3,621 megaelectronvolts (MeV) (the mass of the proton is 938 MeV) also revealed a large binding energy of about 130 MeV between the two charm quarks. Here we report that this strong binding enables a quark-rearrangement, exothermic Reaction in which two heavy baryons (Λc) undergo Fusion to produce the doubly charmed baryon and a neutron n ( ), resulting in an energy release of 12 MeV. This Reaction is a quark-level analogue of the deuterium–tritium Nuclear Fusion Reaction (DT → 4He n). The much larger binding energy (approximately 280 MeV) between two bottom quarks (b) causes the analogous Reaction with bottom quarks ( ) to have a much larger energy release of about 138 MeV. We suggest some experimental setups in which the highly exothermic nature of the Fusion of two heavy-quark baryons might manifest itself. At present, however, the very short lifetimes of the heavy bottom and charm quarks preclude any practical applications of such Reactions.
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quark level analogue of Nuclear Fusion with doubly heavy baryons
Nature, 2017Co-Authors: Marek Karliner, Jonathan L. RosnerAbstract:The essence of Nuclear Fusion is that energy can be released by the rearrangement of nucleons between the initial- and final-state nuclei. The recent discovery of the first doubly charmed baryon , which contains two charm quarks (c) and one up quark (u) and has a mass of about 3,621 megaelectronvolts (MeV) (the mass of the proton is 938 MeV) also revealed a large binding energy of about 130 MeV between the two charm quarks. Here we report that this strong binding enables a quark-rearrangement, exothermic Reaction in which two heavy baryons (Λc) undergo Fusion to produce the doubly charmed baryon and a neutron n (), resulting in an energy release of 12 MeV. This Reaction is a quark-level analogue of the deuterium-tritium Nuclear Fusion Reaction (DT → 4He n). The much larger binding energy (approximately 280 MeV) between two bottom quarks (b) causes the analogous Reaction with bottom quarks () to have a much larger energy release of about 138 MeV. We suggest some experimental setups in which the highly exothermic nature of the Fusion of two heavy-quark baryons might manifest itself. At present, however, the very short lifetimes of the heavy bottom and charm quarks preclude any practical applications of such Reactions.
Marek Karliner - One of the best experts on this subject based on the ideXlab platform.
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quark level analogue of Nuclear Fusion with doubly heavy baryons
Nature, 2017Co-Authors: Marek Karliner, Jonathan L. RosnerAbstract:Two singly charmed baryons can fuse into the recently discovered doubly charmed baryon and a neutron through an exothermic Reaction analogous to the Nuclear Fusion between deuterium and tritium. The LHCb collaboration at CERN's Large Hadron Collider recently reported the discovery of a doubly charmed baryon with a large binding energy between the two charm quarks inside it. Marek Karliner and Jonathan Rosner report that this strong binding energy allows for a rearrangement of the quarks that releases energy in a quark-level analogue of deuterium–tritium Nuclear Fusion. They point out that the even larger binding energy between two bottom quarks can also enable such an exothermic rearrangement, with a considerably larger energy release. The essence of Nuclear Fusion is that energy can be released by the rearrangement of nucleons between the initial- and final-state nuclei. The recent discovery1 of the first doubly charmed baryon , which contains two charm quarks (c) and one up quark (u) and has a mass of about 3,621 megaelectronvolts (MeV) (the mass of the proton is 938 MeV) also revealed a large binding energy of about 130 MeV between the two charm quarks. Here we report that this strong binding enables a quark-rearrangement, exothermic Reaction in which two heavy baryons (Λc) undergo Fusion to produce the doubly charmed baryon and a neutron n ( ), resulting in an energy release of 12 MeV. This Reaction is a quark-level analogue of the deuterium–tritium Nuclear Fusion Reaction (DT → 4He n). The much larger binding energy (approximately 280 MeV) between two bottom quarks (b) causes the analogous Reaction with bottom quarks ( ) to have a much larger energy release of about 138 MeV. We suggest some experimental setups in which the highly exothermic nature of the Fusion of two heavy-quark baryons might manifest itself. At present, however, the very short lifetimes of the heavy bottom and charm quarks preclude any practical applications of such Reactions.
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quark level analogue of Nuclear Fusion with doubly heavy baryons
Nature, 2017Co-Authors: Marek Karliner, Jonathan L. RosnerAbstract:The essence of Nuclear Fusion is that energy can be released by the rearrangement of nucleons between the initial- and final-state nuclei. The recent discovery of the first doubly charmed baryon , which contains two charm quarks (c) and one up quark (u) and has a mass of about 3,621 megaelectronvolts (MeV) (the mass of the proton is 938 MeV) also revealed a large binding energy of about 130 MeV between the two charm quarks. Here we report that this strong binding enables a quark-rearrangement, exothermic Reaction in which two heavy baryons (Λc) undergo Fusion to produce the doubly charmed baryon and a neutron n (), resulting in an energy release of 12 MeV. This Reaction is a quark-level analogue of the deuterium-tritium Nuclear Fusion Reaction (DT → 4He n). The much larger binding energy (approximately 280 MeV) between two bottom quarks (b) causes the analogous Reaction with bottom quarks () to have a much larger energy release of about 138 MeV. We suggest some experimental setups in which the highly exothermic nature of the Fusion of two heavy-quark baryons might manifest itself. At present, however, the very short lifetimes of the heavy bottom and charm quarks preclude any practical applications of such Reactions.
Myoungjae Lee - One of the best experts on this subject based on the ideXlab platform.
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quantum shielding effects on the gamow penetration factor for Nuclear Fusion Reaction in quantum plasmas
Physics of Plasmas, 2017Co-Authors: Myoungjae Lee, Young-dae JungAbstract:The quantum shielding effects on the Nuclear Fusion Reaction process are investigated in quantum plasmas. The closed expression of the classical turning point for the Gamow penetration factor in quantum plasmas is obtained by the Lambert W-function. The closed expressions of the Gamow penetration factor and the cross section for the Nuclear Fusion Reaction in quantum plasmas are obtained as functions of the plasmon energy and the relative kinetic energy by using the effective interaction potential with the WKB analysis. It is shown that the influence of quantum screening suppresses the Sommerfeld Reaction factor. It is also shown that the Gamow penetration factor increases with an increase of the plasmon energy. It is also shown that the quantum shielding effect enhances the deuterium formation by the proton-proton Reaction in quantum plasmas. In addition, it is found that the energy dependences on the Reaction cross section and the Gamow penetration factor are more significant in high plasmon-energy domains.The quantum shielding effects on the Nuclear Fusion Reaction process are investigated in quantum plasmas. The closed expression of the classical turning point for the Gamow penetration factor in quantum plasmas is obtained by the Lambert W-function. The closed expressions of the Gamow penetration factor and the cross section for the Nuclear Fusion Reaction in quantum plasmas are obtained as functions of the plasmon energy and the relative kinetic energy by using the effective interaction potential with the WKB analysis. It is shown that the influence of quantum screening suppresses the Sommerfeld Reaction factor. It is also shown that the Gamow penetration factor increases with an increase of the plasmon energy. It is also shown that the quantum shielding effect enhances the deuterium formation by the proton-proton Reaction in quantum plasmas. In addition, it is found that the energy dependences on the Reaction cross section and the Gamow penetration factor are more significant in high plasmon-energy domains.
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quantum shielding effects on the gamow penetration factor for Nuclear Fusion Reaction in quantum plasmas
Physics of Plasmas, 2017Co-Authors: Myoungjae Lee, Young-dae JungAbstract:The quantum shielding effects on the Nuclear Fusion Reaction process are investigated in quantum plasmas. The closed expression of the classical turning point for the Gamow penetration factor in quantum plasmas is obtained by the Lambert W-function. The closed expressions of the Gamow penetration factor and the cross section for the Nuclear Fusion Reaction in quantum plasmas are obtained as functions of the plasmon energy and the relative kinetic energy by using the effective interaction potential with the WKB analysis. It is shown that the influence of quantum screening suppresses the Sommerfeld Reaction factor. It is also shown that the Gamow penetration factor increases with an increase of the plasmon energy. It is also shown that the quantum shielding effect enhances the deuterium formation by the proton-proton Reaction in quantum plasmas. In addition, it is found that the energy dependences on the Reaction cross section and the Gamow penetration factor are more significant in high plasmon-energy domains.
Jetefda Contributors - One of the best experts on this subject based on the ideXlab platform.
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the dependence of the proton triton thermo Nuclear Fusion Reaction rate on the temperature and total energy content of the high energy proton distribution function
Nuclear Fusion, 2009Co-Authors: D Testa, Marco Cecconello, Ch Schlatter, Jetefda ContributorsAbstract:The endothermic Nuclear Reaction between thermal tritons and high-energy protons can represent an important contribution to the total neutron yield in tokamak plasmas heated by radio-frequency waves, as the first JET experiments have demonstrated (see Mantsinen et al 2001 Nucl. Fusion 41 1815). A further study based on more recent JET experiments was reported in Santala et al 2006 (Plasma Phys. Control. Fusion 48 1233). In this letter we supplement and complete the previous analysis by reporting the first systematic measurement of the scaling of the proton-triton (pT) thermo-Nuclear Fusion Reaction rate as a function of the total energy content and perpendicular tail temperature of the fast protons heated by radio-frequency waves. It is found that the pT-neutron rate increases almost linearly with the fast proton temperature and the total energy content.
