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Detector Calibration by Monte Carlo Simulation Based on the Energy-Range Relationship of Energetic Ions
FANG De-qing, FENG Jun, CAI Xiang-zhou, WANG Jian-song,
SHEN Wen-qing, MA Yu-gang, ZHU Yong-tai LI Song-lin,
WU He-Yu, GOU Quan-bu, JIN Gen-ming, ZHAN Wen-long,
GUO Zhong-yan, XIAO Guo-qing
Chin. Phys. Lett. 1999, 16 (1):
15-17
.
The experimental measurement of the total interaction cross sections of N, C, B, and Be isotopes on 12C target at medium energies is described. A new formula that gives a good description of the energy-range relationship of energetic ions over a wide energy range is presented. The energy calibration of detectors is made by a Monte Carlo simulation method based on this new formula.
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Stationary Photorefractive Self-Pump Phase-Conjugation with Stimulated Backward Scattering in LiNbO3:Fe Crystals
XU Jing-jun, ZHANG Xin-zheng, SUN Qian, ZHANG Guo-quan
N. Kamber, LIU Si-min, ZHANG Guang-yin
Chin. Phys. Lett. 1999, 16 (1):
29-31
.
Stationary photorefractive self-pumped phase-conjugation with one four-wave-mixing interaction region, stimulated by the photorefractive amplified backward scattering, is obtained in LiNbO3:Fe crystals, in which the strong backward scattered light is gotten by putting a scattering particle on the backface of the sample. Even though its reflectivities are not high (its temporal and stationary reflectivities are 10% and 3%, respectively), due to the low electrooptic coefficients of LiNbO3:Fe crystals, our experimental results prove that this mechanism is effective and simple comparing with the “cat ”self-pumped phase-conjugator.
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27 articles
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