Secondary Extinction in Cylindrical and Spherical Crystals for
X-Ray and Neutron Diffraction
HU Hua-Chen1, SHEN Cai-Wan2,
LI Zhao-Huan1, QIAO Ying 3
YANG Bin1
1China Institute of Atomic Energy, P.O.Box 275(18), Beijing 102413
2Institute of Theoretical Physics, Chinese Academy of Sciences,Beijing 100080
3Department of Applied Mathematics, Australian National University, Canberra 0200, Australia
Secondary Extinction in Cylindrical and Spherical Crystals for
X-Ray and Neutron Diffraction
HU Hua-Chen1;SHEN Cai-Wan2;
LI Zhao-Huan1;QIAO Ying 3
YANG Bin1
1China Institute of Atomic Energy, P.O.Box 275(18), Beijing 102413
2Institute of Theoretical Physics, Chinese Academy of Sciences,Beijing 100080
3Department of Applied Mathematics, Australian National University, Canberra 0200, Australia
Abstract： The distribution of the reflection power ratio for a neutron or x-ray diffracted from a cylindrical crystal immersed in an homogenous incident beam is obtained by the numerical solution of the transfer equations for the first time. The profile well reflects all the physical properties of the absorption and extinction behaviour in the crystals. A systematic investigation of the secondary extinction for cylindrical and spherical crystals was carried out based on these results.
HU Hua-Chen;SHEN Cai-Wan;
LI Zhao-Huan;QIAO Ying
YANG Bin. Secondary Extinction in Cylindrical and Spherical Crystals for
X-Ray and Neutron Diffraction[J]. 中国物理快报, 2001, 18(1): 74-76.
HU Hua-Chen, SHEN Cai-Wan,
LI Zhao-Huan, QIAO Ying
YANG Bin. Secondary Extinction in Cylindrical and Spherical Crystals for
X-Ray and Neutron Diffraction. Chin. Phys. Lett., 2001, 18(1): 74-76.
2001, Vol. 18 
