Multiple ionization of carbonaceous molecule clusters by intense 532 nm nanosecond laser

niu dong-mei; li hai-yang; xiao xue; luo xiao-lin; hou ke-yong; li an-lin

Volume 18 Issue 03

Mar. 2006

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Article Navigation > High Power Laser and Particle Beams > 2006 > 18(03): 0-

song sheng-yi, gu yuan-chao, guan yong-chao, et al. Application of TLCODE method to parallel transmission lines[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

niu dong-mei, li hai-yang, xiao xue, et al. Multiple ionization of carbonaceous molecule clusters by intense 532 nm nanosecond laser[J]. High Power Laser and Particle Beams, 2006, 18.

song sheng-yi, gu yuan-chao, guan yong-chao, et al. Application of TLCODE method to parallel transmission lines[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

niu dong-mei, li hai-yang, xiao xue, et al. Multiple ionization of carbonaceous molecule clusters by intense 532 nm nanosecond laser[J]. High Power Laser and Particle Beams, 2006, 18.

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Multiple ionization of carbonaceous molecule clusters by intense 532 nm nanosecond laser

1.
Dalian Institute of Chemical Physics,Chinese Academy of Sciences,P.O.Box 110,Dalian 116023,China;
2.
Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;
3.
Anyang Institute of Technology,Department of Chemical Engneering,Anyang 455000,China;
4.
Graduate School of Chinese Academy of Sciences,Beijing 100049,China

Publish Date: 2006-03-15

Abstract

Abstract

Using time-of-flight mass spectrometry, the multiple ionization process of seeded molecular cluster beams was studied by 532 nm nanosecond laser with intensity from 1010 to 1011 W·cm-2. Ions of Cq+, Oq+ and Iq+ (q=2~4) with translational energy of hundreds of eV were observed when the densest portion of the pulsed molecular beams of benzene, furan, methanol and methyl iodide were irradiated by the nanosecond laser. A model of “multiphoton ionization ignition-inverse bremsstrahlung absorption heated-electron collision ionization” is proposed to explain the generation of those multiply charged ions under the low intensity laser pulse. The kinds of the multiply charged ions as well as the ratio of each ion to the overall ion products did not decrease apparently even if the laser intensity
- cluster,
- multiply charged ion,
- multiphoton ionization,
- inverse bremsstrahlung absorption,
- coulomb explosion,
- ionization mass spectra

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