We discuss transportation and redistribution of energy and angular momentum in the magnetic connection(MC) process and Blandford-Payne(BP) process.MC results in readjusting the interior viscous torque,and its effects ...We discuss transportation and redistribution of energy and angular momentum in the magnetic connection(MC) process and Blandford-Payne(BP) process.MC results in readjusting the interior viscous torque,and its effects are operative not only in but also beyond the MC region.The BP process is invoked to transfer the "excessive" angular momentum from an accretion disc.In addition,we derive a criterion for the interior viscous torque to resolve the puzzle of the overall equilibrium of angular momentum in disc accretion.It turns out that the efficiency of BP at extracting angular momentum and the intensity of the outflow are required to be greater than some critical values.展开更多
The article presents mainly the study of the changes of rotational angular momentum, electronic spin and nuclear spin in the collision of NH 2() with molecules and the channels of producing the excited NO in the colli...The article presents mainly the study of the changes of rotational angular momentum, electronic spin and nuclear spin in the collision of NH 2() with molecules and the channels of producing the excited NO in the collision of CO(a 3∏) with NO. The mechanism on the E-E energy transfer between rare gas metastable atoms and molecules is also discussed. In addition, the quantum state change in the excited molecules is also considered in the collision with or without intramolecular perturbation.展开更多
The noble gas nuclear polarization samples has the prospects of the application which has attracted much interest. The noble gas nuclear samples with high degree of the polarized densities are used as ideal nuclear po...The noble gas nuclear polarization samples has the prospects of the application which has attracted much interest. The noble gas nuclear samples with high degree of the polarized densities are used as ideal nuclear polarization samples in nuclear and elementary particle physics, because these samples are inert chemically and because展开更多
基金supported by the National Natural Science Foundation of China (Grant No. 10873005)the Research Fund for the Doctoral Program of Higher Education (Grant No. 200804870050)the National Basic Research Program of China (Grant No. 2009CB824800)
文摘We discuss transportation and redistribution of energy and angular momentum in the magnetic connection(MC) process and Blandford-Payne(BP) process.MC results in readjusting the interior viscous torque,and its effects are operative not only in but also beyond the MC region.The BP process is invoked to transfer the "excessive" angular momentum from an accretion disc.In addition,we derive a criterion for the interior viscous torque to resolve the puzzle of the overall equilibrium of angular momentum in disc accretion.It turns out that the efficiency of BP at extracting angular momentum and the intensity of the outflow are required to be greater than some critical values.
文摘The article presents mainly the study of the changes of rotational angular momentum, electronic spin and nuclear spin in the collision of NH 2() with molecules and the channels of producing the excited NO in the collision of CO(a 3∏) with NO. The mechanism on the E-E energy transfer between rare gas metastable atoms and molecules is also discussed. In addition, the quantum state change in the excited molecules is also considered in the collision with or without intramolecular perturbation.
基金Project supported by the National Natural Science Foundation of China
文摘The noble gas nuclear polarization samples has the prospects of the application which has attracted much interest. The noble gas nuclear samples with high degree of the polarized densities are used as ideal nuclear polarization samples in nuclear and elementary particle physics, because these samples are inert chemically and because
