Threshold photodetachment spectroscopy of negative ions
This thesis is concerned with the development and application of high resolution threshold photodetachment spectroscopy of negative ions. Chapter I deals with the principles of our photodetachment technique, and in chapter II a detailed description of the apparatus is presented. The threshold photodetachment spectra of I{sup {minus}}, and SH{sup {minus}}, presented in the last sections of chapter II, indicated that a resolution of 3 cm{sup {minus}1} can be achieved using our technique. In chapter III the threshold photodetachment spectroscopy study of the transition state region of I + HI and I + Di reactions is discussed. Our technique probes the transition state region directly, and the results of our study are the first unambiguous observations of reactive resonances in a chemical reaction. Chapters IV, V and VI are concerned with the spectroscopy of small silicon and carbon clusters. From our spectra we were able to assign electronic state energies and vibrational frequencies for the low lying electronics states of Si{sub n} (n=2,3,4), C{sub 5} and their corresponding anions.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE; USDOD; USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 7069902
- Report Number(s):
- LBL-31876; ON: DE92017090
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
PHOTOELECTRON SPECTROSCOPY
HYDRIODIC ACID
CHEMICAL REACTIONS
IODINE
MOLECULAR IONS
ENERGY-LEVEL TRANSITIONS
CARBON
KINETIC ENERGY
LASER RADIATION
MOLECULAR BEAMS
RADICALS
SILICON
THRESHOLD ENERGY
BEAMS
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY
HALOGEN COMPOUNDS
HALOGENS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IODINE COMPOUNDS
IONS
NONMETALS
RADIATIONS
SEMIMETALS
SPECTROSCOPY
400201* - Chemical & Physicochemical Properties
664200 - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-)