“The Two Photon Sequential Absorption (TPSA) technique has been used to investigate a state of 0+ symmetry of IF (iodine monofluoride) which has Te= 41292 cm-1, ωe = 248.8 cm-1, and Be = .1292 cm-1. This state has been designated the E state and dissociates to I+(3P2) and F-(1S0) ionic partners.
The TPSA technique was also used to study collisions between IF molecules in specific rotational levels of the B state and He atoms. The total depopulation rate of an individual rotational level for vB = 6 of IF(B state) in He was found to be 4x10-10 cm3 molecule-1 s-1.
In both experiments, individual rotational-vibrational levels in the B state were initially populated with pulsed dye laser radiation. A second pulsed dye laser was scanned through its dye profile, inducing transitions from the B state to the E state. In the initial investigation of the E state, the total cell pressure was maintained at 1 Torr and no collisionally populated B state levels were encountered. After the E state characteristics were determined, the cell pressure was increased to between 3 Torr and 9 Torr, and collisionally populated B state levels were observed”—Abstract, page ii.
Littlewood, Ian M.
Schearer, Laird D.
Bell, Robert John, 1934-
Clark, John T.
Alexander, Ralph William, Jr.
Ph. D. in Physics
University of Missouri--Rolla
vi, 89 pages
© 1986 Brian Keith Clark, All rights reserved.
Dissertation - Restricted Access
Library of Congress Subject Headings
Collisions (Nuclear physics)
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://laurel.lso.missouri.edu/record=b1939709~S5
Clark, Brian Keith, "Spectroscopy of the E state of iodine monofluoride and rotational energy transfer of the B state in collisions with He, using two-photon sequential absorption spectroscopy" (1986). Doctoral Dissertations. 610.
Share My Dissertation If you are the author of this work and would like to grant permission to make it openly accessible to all, please click the button above.