脉冲激光作用下碘掺杂的AgBr-T颗粒中光电子衰减特性

杨少鹏; 傅广生; 刘荣鹃; 代秀红; 李晓苇

中国激光, 2004, 31 (11): 1378, 网络出版: 2006-06-12

脉冲激光作用下碘掺杂的AgBr-T颗粒中光电子衰减特性

Photoelectron Decay Characteristics in Iodide-Doped AgBr-T Grains Excited by a Pulse Laser

论文大纲

杨少鹏 ^*傅广生刘荣鹃代秀红李晓苇

作者单位

河北大学物理科学与技术学院, 河北保定 071002

摘要

利用微弱信号的微波吸收相敏检测技术,在短脉冲激光作用下,测量了在不同碘化物掺杂方式和掺杂量下的AgBr-T颗粒中自由光电子和浅束缚光电子随时间的衰减曲线,根据测得的衰减曲线得到了不同条件下的自由光电子寿命(FLT)、自由光电子衰减时间(FDT)及浅束缚光电子衰减时间(SDT)值,通过比较这些值分析了碘化物在AgBr-T颗粒中的作用和碘化物对AgBr-T颗粒的感光性能的影响。详细分析了碘含量小于、大于以及等于3%的吸收信号和色散信号曲线,讨论了曲线上各个区的影响因素。

Abstract

The curves of free photoelectron and shallow-trapped photoelectron decaying with time in different doping method and doping amount of iodide are measured under the action of short-pulsed laser by using microwave absorption phase sensitive technique, which is used to measure faint signal. According to the curve, the lifetime values and the decay time values of free photoelectron and shallow-trapped photoelectron under different condition are obtained. By comparing these values, the work of iodide in AgBr-T grain and its influence on the photographic property of AgBr-T are analyzed. In addition, the absorbed and dispersive signals with the iodide amount less than, more than, and equal 3% are analyzed in detail, and the influencing factors on every section are discussed.

参考文献

[1] . R. V. Sahyun, D. K. Sharma, N. Serpone. Mechanisms of spectral sensitization of silver halides: role of sensitizing dye complexation[J]. J. Imag. Sci. Technol., 1995, 39(5): 377-385.

[2] . Tani. Characterization of sensitization centers and fog centers formed during digestion for sulfur sensitization[J]. J. Imag. Sci. Technol., 1995, 39(5): 386-392.

[3] . Mussing. Principles of microwave absorption technique applied to AgX microcrystals[J]. J. Imag. Sci. Technol., 1997, 41(2): 118-127.

[4] . Van Den Eeden, F. Callens, F. Cardon et al.. Transient microwave photoconductivity and computer simulation study of Ir3+- and Rh3+-dopped AgCl microcrystals[J]. J. Imag. Sci. Technol., 1995, 39(5): 393-401.

[5] . . Investigation of the photoelectron decay of silver halide microcrystal[J]. Chin. Phys., 2003, 12(12): 1435-1439.

[6] . . Characteristics of photoelectron decay of silver halide microcrystal illuminated by a short pulse laser[J]. Chin. Phys. Lett., 2002, 19(3): 429-431.

[7] . . Photoelectrons decay kinetics investigation of dye sensitized AgBr emulsion[J]. Photographic Science and Photochemistry, 2003, 21(5): 321-327.

杨少鹏, 傅广生, 刘荣鹃, 代秀红, 李晓苇. 脉冲激光作用下碘掺杂的AgBr-T颗粒中光电子衰减特性[J]. 中国激光, 2004, 31(11): 1378. 杨少鹏, 傅广生, 刘荣鹃, 代秀红, 李晓苇. Photoelectron Decay Characteristics in Iodide-Doped AgBr-T Grains Excited by a Pulse Laser[J]. Chinese Journal of Lasers, 2004, 31(11): 1378.

脉冲激光作用下碘掺杂的AgBr-T颗粒中光电子衰减特性

关于本站 Cookie 的使用提示

全站搜索

脉冲激光作用下碘掺杂的AgBr-T颗粒中光电子衰减特性

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索