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1. 东莞理工学院 电子工程学院,广东 东莞,523106
2. 重庆大学 电气工程学院 重庆,400044
3. 重庆交通大学 图书馆 重庆,400074
纸质出版日期:2010-6-30,
网络出版日期:2010-6-30,
收稿日期:2009-1-25,
修回日期:1900-1-2,
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张 梅, 罗晓华, 罗诗裕, 等. 晶体摆动场的辐射衰减与能量增益[J]. 发光学报, 2010,31(3):454-458.
ZHANG Mei, LUO Xiao-hua, LUO Shi-yu, et al. The Radiation Attenuation and Energy Gain for Crystallie Undulator Field[J]. Chinese Journal of Luminescence, 2010,31(3):454-458.
由于晶体弯曲、电子多重散射和晶格热振动引起的粒子退道
辐射同原子相互作用引起的电离损失
以及系统非线性引起的全局分叉与混沌行为等
晶体摆动场辐射面临的问题比自由电子激光要复杂得多。首先
引入晶体摆动场自发辐射谱分布
并在简谐近似下讨论了运动方程、系统增益和能量衰减。结果表明:一般情况下辐射谱只有少数几条谱线
而在简谐近似下
谱线只有一条。其次
指出了辐射能量比较高时
衰减是主要的
选择的晶体长度必须小于衰减长度
且可选择正电子或质子作炮弹;当辐射能量比较低时
退道是主要的
选择的晶体长度必须小于退道长度
且可选择重离子作炮弹。
The problem included in the crystalline undulator field radiation is complex and more the free electron laser because of the dechanneling effect by the crystal bend
the electron multi-scattering and the thermal oscillation of the lattice
the ionization loss by an interaction between the radiation with an atom
the global bifurcation and the chaotic behaviours by the nonlinearity of the system
etc.
Firstly
the introducing the spectral distribution of a spontaneous radiation for the crystalline undulator field based on the classical field theory
the particle motion equation
the gain factor and the radiation attenuation were discussed in a harmoric approximation. The results showed that there is few radiation lines in the general case; and there is only one line in a harmoric approximation. Secondly
it was pointed out that the radiation attenuation is major if energy is higher
then the crystal length must be selected smaller than the dechanneling length
and one may selects a positron or a proton as projectile; in addition
the dechanneling effect is major if energy is lower
then the crystal length must be selected smaller than the attenuation length
and one may select a heavy ion as projectile.
摆动场辐射谱分布增益系数辐射衰减
crystalline undulator radiationspectral distributiongain factorradiation attenuation
. Korol A V, Solovyov A V, Greiner W, et al. Photon emission in crystalline undulator [J]. Nucl. Inst. Methods in Physics Research B, 2008, 266 (8):1173-1176.
. Korol A, Solovyov A V, Greiner W. Advanced Radiation Sources and Applications [M]. Wiedemann H(ed.), Natherlands: Springer, 2006:165-189.
. Korol A V, Solovyov A V, Greiner W. Channeling of positrons through periodically bent crystals: on Feasibility of crystalline undulator and gamma-laser [J]. Int. J. Mod. Phys. E, 2004, 13 (5):867-916.
. Tabrizi M, Korol A V, Solovyov A V, et al. Feasibility of an electron-based crystalline undulator [J]. Phys. Rev. Lett., 2007, 98 (16):164801-1-4.
. Bryukov V M, Afonin A G, Baranov V T, et al. Accelerator Test of Crystal Undulators [M]. Wiedemann H(ed.), Natherlands, Springer, 2006:191-200.
. Korol A V, Andrey V, Solovyov A V, et al. Total energy losses due to the radiation in an acoustically bended undulator:the undulator and the channeling radiation included [J]. Int. J. Mod. Phys. E, 2000, 9 (1):77-105.
. Wang Yaxun, Shao Mingzhu, Luo Shiyu. The coherent parametric ray radiation and dechanneling effects in bent crystal [J]. Seimiconductor Optoelectronics(半导体光电), 2009, 30 (2):223-226 (in Chinese).
. Luo Shiyu, Shao Mingzhu. Possibility of undulator radiation as short length laser by a periodically bent crystal [J]. Chin. J. Laser (中国激光), 2009, 36 (6):1378-1382 (in Chinese).
. Zhang Li, Wang Shanjin, Luo Shiyu, et al. The parametric X-ray radiation and local bifurcation of rotated periodic orbit in system [J]. Chin. J. Lumin. (发光学报), 2009, 30 (4):520-524 (in Chinese).
. Tan Yongming, Shao Mingzhu, Luo Shiyu, et al. Ch-2x potential and classical describtion of planar channeling radiation for relativistic electron [J]. Chin. J. Lumin.(发光学报), 2005, 26 (2):163-67 (in Chinese).
. Luo Shiyu, Shao Mingzhu. Sine-squared potential and chaotic behaviour of strained superlattice [J]. Chin. J. Semiconductors (半导体学报), 2005, 26 (2):294-297 (in Chinese).
. Shao Mingzhu, Luo Shiyu. The tan2x potential and the eigenvalue and eigenfunction for planar channeling radiation [J]. Acta Phys. Sin. (物理学报), 2005, 54 (9):4092-4096 (in Chinese).
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