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利用时间分辨光谱技术,研究了激光诱导 Cu 等离子体中激发态 5s' 4D7/2 的形成及其辐射跃迁的瞬态特性.结果表明:在激发态 5s' 4D7/2 原子的制备过程中,电子离子复合、粒子间碰撞机理在不同时刻分别起主导作用.激光峰值到达金属表面后 500ns 期间,粒子 间的剧烈碰撞作用使得激发态 5s' 4D7/2 主要通过向低能态 4p' 4Fo9/2跃迁来转移能量.500ns 以后,激发态 5s' 4D7/2 通过以相同的概率辐射 CuI465.11nm 和 CuI529.25nm 特征谱线向低能态 4p' 4Fo9/2 和4p' 4 Do7/2转移能量.The formation of excited atom state 5s' D7/2 and its transition process in the copper plasma induced by nanosecond pulse laser are studied by the time-resolved spectrum technology. The experimental results indicate the recombination of electron and ion and the collisions among particles each play a dominent role in forming excited atom state 5s'D7/2 at different tims during its evolvement. When the collisions among particles are severe, the excited atom state 5s' D7/2 mainly transits to low energy atom state 4p' 4 Fo9/2. 500 ns after the peak of laser pulse arriving at target surface, the excited state 5s'D7/2 transited to 4p' 4 Fo9/2 and 4p' 4 D7/2 with the same probabilities by emitting lines CuI465.11 nm and CuI529.25 nm respectively.
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Keywords:
- laser ablation /
- time-resolved spectrum /
- plasma radiation /
- energy transfer
[1] Hertel I V, Radloff W 2006 Rep. Prog. Phys. 69 1897
[2] Zhang S D, Li H Y 2003 Acta Phys. Sin. 52 1297 (in Chinese) [张树东、李海洋 2003 物理学报 52 1297]
[3] Moisan M, Barbra J, Crevier M C, Pelletier J, Philip N, Saoudi B 2002 Pure Appl. Chem. 74 349
[4] Sun F, Sturgeon R E 1999 Spectrochim. Acta Part 54 2121
[5] Wagatsuma K 2001 Spectrochim. Acta Part 56 465
[6] Yang Z H,Du S B, Zeng X T, Ren S T, Song Z Y, Su H, Wang Y D 2006 Acta Phys. Sin. 55 2206 (in Chinese) [杨治虎、杜树斌、曾宪堂、任守田、宋张勇、苏 弘、王友德 2006 物理学报 55 2206]
[7] Wang J,Hu Z F, Zhang D Y,Zhan M S 1998 Acta Phys. Sin. 47 1265 (in Chinese) [王 谨、胡正发、张登玉、詹明生 1998 物理学报 47 1265]
[8] Sdorra W, Niemax K M 1992 Mikrochim.Acta 107 319
[9] Timmer C, Srivastava S K 1991 J. Appl. Phys. 70 1888
[10] Chen C S, Zhou X L, Man B Y 2007 J.Shandong Normal University (natural science)22 39 (in Chinese) [陈传松、周新玲、满宝元 2007 山东师范大学学报( 自然科学版) 22 39]
[11] Moor C E 1971 Atomic energy levels (Vol. 2) ( Nat.Bur.Stand.) p111
[12] Kirkwood S E, Tsui Y Y, Fedosejevs R, Brantov A V, Bychenkov V Y 2009 Phys. Rev. B 79 144120
[13] Hu D Z 2009 Acta Phys. Sin. 58 1077 (in Chinese) [胡德志 2009 物理学报 58 1077]
[14] Wang X T, Man B Y, Wang G T, Zhao Z, Liao Y, Xu B Z, Xia Y Y, Mei L M, Hu X Y 1996 J. Appl. Phys. 80 1783
[15] Tan X Y, Zhang D M, Li Z H, Guan L, Li L 2005 Acta Phys. Sin. 54 3915 (in Chinese) [谭新玉、张端明、李智华、关 丽、李 莉 2005 物理学报 54 3915]
[16] Sobelman I I 1979 Atomic Spectra and Radiative Transitions (Oxford Pergamon Press)p206
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[1] Hertel I V, Radloff W 2006 Rep. Prog. Phys. 69 1897
[2] Zhang S D, Li H Y 2003 Acta Phys. Sin. 52 1297 (in Chinese) [张树东、李海洋 2003 物理学报 52 1297]
[3] Moisan M, Barbra J, Crevier M C, Pelletier J, Philip N, Saoudi B 2002 Pure Appl. Chem. 74 349
[4] Sun F, Sturgeon R E 1999 Spectrochim. Acta Part 54 2121
[5] Wagatsuma K 2001 Spectrochim. Acta Part 56 465
[6] Yang Z H,Du S B, Zeng X T, Ren S T, Song Z Y, Su H, Wang Y D 2006 Acta Phys. Sin. 55 2206 (in Chinese) [杨治虎、杜树斌、曾宪堂、任守田、宋张勇、苏 弘、王友德 2006 物理学报 55 2206]
[7] Wang J,Hu Z F, Zhang D Y,Zhan M S 1998 Acta Phys. Sin. 47 1265 (in Chinese) [王 谨、胡正发、张登玉、詹明生 1998 物理学报 47 1265]
[8] Sdorra W, Niemax K M 1992 Mikrochim.Acta 107 319
[9] Timmer C, Srivastava S K 1991 J. Appl. Phys. 70 1888
[10] Chen C S, Zhou X L, Man B Y 2007 J.Shandong Normal University (natural science)22 39 (in Chinese) [陈传松、周新玲、满宝元 2007 山东师范大学学报( 自然科学版) 22 39]
[11] Moor C E 1971 Atomic energy levels (Vol. 2) ( Nat.Bur.Stand.) p111
[12] Kirkwood S E, Tsui Y Y, Fedosejevs R, Brantov A V, Bychenkov V Y 2009 Phys. Rev. B 79 144120
[13] Hu D Z 2009 Acta Phys. Sin. 58 1077 (in Chinese) [胡德志 2009 物理学报 58 1077]
[14] Wang X T, Man B Y, Wang G T, Zhao Z, Liao Y, Xu B Z, Xia Y Y, Mei L M, Hu X Y 1996 J. Appl. Phys. 80 1783
[15] Tan X Y, Zhang D M, Li Z H, Guan L, Li L 2005 Acta Phys. Sin. 54 3915 (in Chinese) [谭新玉、张端明、李智华、关 丽、李 莉 2005 物理学报 54 3915]
[16] Sobelman I I 1979 Atomic Spectra and Radiative Transitions (Oxford Pergamon Press)p206
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