Fusion reactions play a very important role for the creation of heavier elements in the quiescent and explosive burning phases in stars.Fusion processes also generate the energy in the Sun that created and maintain li...Fusion reactions play a very important role for the creation of heavier elements in the quiescent and explosive burning phases in stars.Fusion processes also generate the energy in the Sun that created and maintain life in our earth[1].展开更多
The understanding of open quantum systems in unbound nuclei is a challenge to the nuclear structure research[1].The continuum coupling effect may lead to a reordering of the shells in such systems[2].A way to study th...The understanding of open quantum systems in unbound nuclei is a challenge to the nuclear structure research[1].The continuum coupling effect may lead to a reordering of the shells in such systems[2].A way to study this effect is to compare the level schemes of two mirror nuclei involving an unbound and a bound nucleus such as 16F and 16N[3].Here we report an experiment of studying the level properties of 16F using the resonant elastic scattering with an 15O radioactive beam delivered by the Radioactive Ion Beam Line at Lanzhou(RIBLL)[4].展开更多
Novae emit gamma rays during the first several hours after the explosion at energies of 511 keV and below[1].^(18)F is the most important gamma-ray source because of its relatively large abundance and long half-life(t...Novae emit gamma rays during the first several hours after the explosion at energies of 511 keV and below[1].^(18)F is the most important gamma-ray source because of its relatively large abundance and long half-life(t1/2=109.8 m).The ^(18)F(p,α)^(15)O is the main destruction reaction of ^(18)F,which may constrain the amount of ^(18)F severely.However,the reaction rate of ^(18)F(p,α)^(15)O is still very uncertain.展开更多
The carbon burning is predicted to be responsible for the phenomenon of X-ray super-burst.Stellar model calculations show that the temperature of neutron star crush is not high enough to trigger ignition^([1]).It has ...The carbon burning is predicted to be responsible for the phenomenon of X-ray super-burst.Stellar model calculations show that the temperature of neutron star crush is not high enough to trigger ignition^([1]).It has been suggested that the fusion reaction between light neutron-rich nuclei may provide an additional source of heat^([2]).展开更多
Stars with initial mass■8M_(sun)burn the carbon element after consuming most of its helium materials.The^(12)C+^(12)C fusion reaction is the primary reaction of the carbon burning process,producing magnesium and othe...Stars with initial mass■8M_(sun)burn the carbon element after consuming most of its helium materials.The^(12)C+^(12)C fusion reaction is the primary reaction of the carbon burning process,producing magnesium and other elements including neon,sodium and oxygen^([1]).展开更多
Type I X-ray bursts are the most frequently observed thermonuclear explosions in nature[1].They take place on the surface of accreting neutron star in low-mass X-ray binary systems.
It has been proposed that fusion reactions between neutron-rich light nuclei,for example 24C,24O and 28Ne,may contribute to achieving the ignition temperature for explosive carbon burning process during superbusrsts[1...It has been proposed that fusion reactions between neutron-rich light nuclei,for example 24C,24O and 28Ne,may contribute to achieving the ignition temperature for explosive carbon burning process during superbusrsts[1,2].Studies of fusion reactions involving neutron-rich nuclei are beyond ordinary experimental techniques,since the intensity of radioactive beam become low for these measurements[3].The active target technique using TPC(Time Projection Chamber),with properties of multi-sampling,high efficiency and low background,is a suitable solution to the problem.展开更多
基金National Key Research and Development program(MOST 2016YFA0400501)from the Ministry of ScienceTechnology of China and National Natural Science Foundation of China(11021504,U1632142)。
文摘Fusion reactions play a very important role for the creation of heavier elements in the quiescent and explosive burning phases in stars.Fusion processes also generate the energy in the Sun that created and maintain life in our earth[1].
基金National Key Research and Development Program of China(2016YFA0400503).
文摘The understanding of open quantum systems in unbound nuclei is a challenge to the nuclear structure research[1].The continuum coupling effect may lead to a reordering of the shells in such systems[2].A way to study this effect is to compare the level schemes of two mirror nuclei involving an unbound and a bound nucleus such as 16F and 16N[3].Here we report an experiment of studying the level properties of 16F using the resonant elastic scattering with an 15O radioactive beam delivered by the Radioactive Ion Beam Line at Lanzhou(RIBLL)[4].
基金National Key Research and Development Program of China(2016YFA0400503).
文摘Novae emit gamma rays during the first several hours after the explosion at energies of 511 keV and below[1].^(18)F is the most important gamma-ray source because of its relatively large abundance and long half-life(t1/2=109.8 m).The ^(18)F(p,α)^(15)O is the main destruction reaction of ^(18)F,which may constrain the amount of ^(18)F severely.However,the reaction rate of ^(18)F(p,α)^(15)O is still very uncertain.
文摘The carbon burning is predicted to be responsible for the phenomenon of X-ray super-burst.Stellar model calculations show that the temperature of neutron star crush is not high enough to trigger ignition^([1]).It has been suggested that the fusion reaction between light neutron-rich nuclei may provide an additional source of heat^([2]).
基金Strategic Priority Research Program of Chinese Academy of Sciences(XDB34020200)National Key Research and Development program(MOST 2016YFA0400501)from Ministry of Science and Technology of China。
文摘Stars with initial mass■8M_(sun)burn the carbon element after consuming most of its helium materials.The^(12)C+^(12)C fusion reaction is the primary reaction of the carbon burning process,producing magnesium and other elements including neon,sodium and oxygen^([1]).
基金National Key Research and Development Program of China(2016YFA0400503)。
文摘Type I X-ray bursts are the most frequently observed thermonuclear explosions in nature[1].They take place on the surface of accreting neutron star in low-mass X-ray binary systems.
文摘It has been proposed that fusion reactions between neutron-rich light nuclei,for example 24C,24O and 28Ne,may contribute to achieving the ignition temperature for explosive carbon burning process during superbusrsts[1,2].Studies of fusion reactions involving neutron-rich nuclei are beyond ordinary experimental techniques,since the intensity of radioactive beam become low for these measurements[3].The active target technique using TPC(Time Projection Chamber),with properties of multi-sampling,high efficiency and low background,is a suitable solution to the problem.
