A fully automatic system at HWRR of CIAE for INAA is described. All processes of the system, for example, change, transfer and irradiation of sample, data collection and treatment and so on are automatically controlle...A fully automatic system at HWRR of CIAE for INAA is described. All processes of the system, for example, change, transfer and irradiation of sample, data collection and treatment and so on are automatically controlled by an IBM- PC/XT micro- computer. Its applications are as follows: fully automatic determination of uranium content by delayed neutron counting method; fully automatic multielement INAA for short, middle and long lived nuclides.展开更多
The nuclear dealignment is studied during the slowing down process and after thermolization in different gases by the time differential perturbed angular distribution method. A large fraction of the initial nuclear al...The nuclear dealignment is studied during the slowing down process and after thermolization in different gases by the time differential perturbed angular distribution method. A large fraction of the initial nuclear alignment following the nuclear reaction can be preserved in gases with large moments of inertia, but only a small fraction in monoatomic gases such as the noble gases. The plunger experiment shows that the nuclear dealignment occurs during the slowing down process and not after thermolization.展开更多
文摘A fully automatic system at HWRR of CIAE for INAA is described. All processes of the system, for example, change, transfer and irradiation of sample, data collection and treatment and so on are automatically controlled by an IBM- PC/XT micro- computer. Its applications are as follows: fully automatic determination of uranium content by delayed neutron counting method; fully automatic multielement INAA for short, middle and long lived nuclides.
文摘The nuclear dealignment is studied during the slowing down process and after thermolization in different gases by the time differential perturbed angular distribution method. A large fraction of the initial nuclear alignment following the nuclear reaction can be preserved in gases with large moments of inertia, but only a small fraction in monoatomic gases such as the noble gases. The plunger experiment shows that the nuclear dealignment occurs during the slowing down process and not after thermolization.
