Laser ablation of NaN{sub 3} and CsN{sub 3}

Journal Article · Wed Jun 08 04:00:00 EDT 2005 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.1899564· OSTI ID:20722875

Belau, Leonid; Gorodetsky, Jonathan; Haas, Yehuda ^[1]

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1. Department of Physical Chemistry and the Farkas Center for Light Induced Processes, Hebrew University of Jerusalem, Jerusalem (Israel)

Solid sodium azide and cesium azide crystals were irradiated by high power laser pulses; the ablation products were rapidly cooled by a supersonic expansion of helium and detected by a time of flight mass spectrometer. Neutral and positively charged species were separately recorded and analyzed using {sup 15}N isotopomers to help in their assignment. Cluster series of the sequences Na(NaN{sub 3}){sub n} [or Cs(CsN{sub 3}){sub n}] were observed, as well as clusters containing NaOH and NaCN; the origin of the C, H, and O atoms appears to be water and CO{sub 2} occluded in the salt. Addition of D{sub 2}O increased the intensity of large clusters and added deuterated ones, whereas addition of chloroform leads to formation of clusters of a Na atom with (NaCl){sub n} clusters. Possible mechanisms for the formation of these clusters are discussed.

• OSTI ID: 20722875
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 22 Vol. 122; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABLATION
AZIDES
CARBON DIOXIDE
CESIUM COMPOUNDS
CHLOROFORM
HEAVY WATER
HELIUM
LASERS
MOLECULAR CLUSTERS
PULSES
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
TIME-OF-FLIGHT MASS SPECTROMETERS
TIME-OF-FLIGHT METHOD