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Studies of matrix-isolation spectra in solid hydrogen


Runyan, Charles C. (1972) Studies of matrix-isolation spectra in solid hydrogen. Master's thesis, California Institute of Technology. doi:10.7907/01VE-B736.


Studies into the spectral features produced by atomic and molecular systems isolated in solid hydrogen have been undertaken to elucidate the nature of the interaction between the isolated species and the surrounding matrix. The absorption properties of matrix-isolated calcium are investigated to seek an understanding of the diffuse characteristics of absorption spectra perceived in stellar radiation that traverses interstellar dust clouds. The fine structural features of the A^1B_(2u) – X^1A(1g) transition of benzene isolated in hydrogen are examined for their bearing on the extremely sharp lines exhibited by benzene in all light matrices. The impure hydrogen samples are prepared for absorption investigations by depositing hydrogen and calcium or benzene onto a window cooled to 2°K. Besides the spectra of the above two systems isolated in hydrogen, the absorption signals of benzene in solid deuterium and of perdeuterobenzene in both solid hydrogen and solid deuterium are also presented. Furthermore, changes in the benzene fine structure that result from the reduction of the ortho/para ratio of the solid hydrogen medium are provided. Because these studies have not been carried to completion, extensive detail in experimental procedures is supplied and a brief analysis of the shifts and shapes of the observed absorption lines offers thoughts for further research.

Item Type:Thesis (Master's thesis)
Subject Keywords:Chemistry
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:5 June 1972
Record Number:CaltechTHESIS:05072010-113436579
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5783
Deposited By: Tony Diaz
Deposited On:18 Aug 2010 20:34
Last Modified:21 Dec 2019 02:18

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