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Lawrence Berkeley National Laboratory Recent Work Title MULTIPHOTON LASER IONIZATION MASS SPECTROMETRY OF CESIUM IODIDE AND ATOMIC IODINE Permalink
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2012 |
| Abstract | U~ing the technique of lase:u ionization mass spectrometry, a study of multiphoton ionization~!) of atomic iodine and cesium iodide was conducted with a tunable dye laser. One of the objectives was to determine if this technique provides more selective ionization of the components of such a mixture than does conventional electron bombardment. It was found that under intense photon irradiation, Csi fragments to I+ by a multistep process. The first step is dissociation of Csi which is followed by multiphoton ionization of the liberated atomic iodine. Because of this mechanism, the atomic iodine in a Csi + I mixture with less than 10% iodine cannot be detected by MPI at the available photon wavelenths (2800 3000 ~). However, operation at wavelengths which preclude dissociation of Csi should greatly improve the selectivity. 0 The cross section for two-photon excitation of iodine at 3047 A was ยท-so 4 determined to be 4 x 10 ern -s. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://cloudfront.escholarship.org/dist/prd/content/qt8jg7c8md/qt8jg7c8md.pdf?t=p0xg2c |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
