ISSN:
1432-0630
Keywords:
07.75
;
33.80
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract State selective stepwise laser photoionization of nitric oxide molecules has been investigated using mass spectroscopic detection with a quadrupole filter. The ionization was carried out in two steps, the first being excitation with a tunable dye laser in the (A 2∑+,v′=0.1 state at wavelength around 226 nm and 215 nm, and the second being excitation beyond the ionization limit with a fixed frequency laser at 266 nm, i.e. the fourth harmonic of a Nd:YAG laser. The sensitivity of NO detection and the mass resolution of this method has been studied. The ion signal of NO+ was observed with linear pressure dependence at partial densities of NO down to 1×105 cm−3. This corresponds to a density per state of about 2.5×104 cm−3. The mass selectivity was investigated at the various isotopic components of natural nitric oxide14N16O,15N16O,14N18O and the isobare14N17O.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00900392
Permalink
