Resonance enhanced multiphoton and single-photon ionization of molecules and molecular fragments. Annual technical report, May 1, 1994--April 30, 1995
In resonance enhanced multiphoton ionization (REMPI) pulsed laser radiation is utilized to prepare a molecule in an excited state via absorption of one or more photons and to subsequently ionize that level before it decays. A remarkable feature of REMPI is that the very narrow bandwidth of laser radiation makes is possible to select a specific rotational level in the initial (ground) state and to prepare the excited state of interest in a single rotational level. By suitable choice of the excitation step, it is thus possible to selectively ionize a species of interest present in very minor concentrations without ionizing any other species that may be present. This feature makes REMPI a very powerful tool for ultrasensitive detection of trace or transient species.
- Research Organization:
- California Inst. of Tech., Pasadena, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- FG03-87ER60513
- OSTI ID:
- 503465
- Report Number(s):
- DOE/ER/60513--T5; ON: DE97007374
- Country of Publication:
- United States
- Language:
- English
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