Infrared spectroscopy and radiative lifetimes of molecular ions. [CH/sub 2//sup -/; CH/sup -/; hydrogen cluster ions; solvated hydronium ion]
Technical Report
·
OSTI ID:6583850
This thesis describes new experiments on the radiative lifetimes of small molecular anions and on the vibrational spectroscopy of weakly bound cluster cations, using an ion trapping photodissociation/photodetachment apparatus. In Chapters 2 and 3, the radiative lifetimes of long-lived excited states of the CH/sub 2//sup -/ and CH/sup -/ anions are reported. The ions are trapped in a high vacuum radio frequency octopole ion trap. Vibrational predissociation spectroscopy of weakly bound ionic clusters is the subject of the last chapters. Chapter 4 presents infrared spectra of the hydrogen cluster ions H/sub 3//sup +/ . (H/sub 2/)/sub n/. The clusters dissociate after excitation of a single quantum in the ligand H/sub 2/ stretching vibrations; spectra are recorded by detecting the fragment ions as a function of photon energy. Chapter 5 describes a new ''messenger'' technique used to obtain vibrational spectra of the hydronium ion hydrates H/sub 3/O/sup +/ . (H/sub 2/O)/sub n/, n = 1,2,3.
- Research Organization:
- California Univ., Berkeley (USA). Dept. of Chemistry
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6583850
- Report Number(s):
- LBL-22620; ON: DE87006137
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ANIONS
CATIONS
CHARGED PARTICLES
ENERGY LEVELS
EXCITED STATES
HYDRATION
HYDROGEN IONS
INFRARED SPECTRA
ION PAIRS
IONS
LIFETIME
MOLECULAR IONS
OXONIUM IONS
SOLVATION
SPECTRA
VIBRATIONAL STATES
400201* -- Chemical & Physicochemical Properties
ANIONS
CATIONS
CHARGED PARTICLES
ENERGY LEVELS
EXCITED STATES
HYDRATION
HYDROGEN IONS
INFRARED SPECTRA
ION PAIRS
IONS
LIFETIME
MOLECULAR IONS
OXONIUM IONS
SOLVATION
SPECTRA
VIBRATIONAL STATES