2026-09-21T06:57:39Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/66233 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Malk, Edward George 2014-12-12T20:55:14Z 2014-12-12T20:55:14Z 10000-01-01 1980 1980 Microwave emission attributed to a linear cascade effect has been observed from ('14)NH(,3) optically pumped by a CO(,2) laser. The emission is tunable over the saturated homogeneous linewidth of the ground state sQ(5,4) inversion transition at 22.653 GHz. The circulating power density of the optically pumped emission is 0.54 watts/cm('2) at NH(,3) pressure of 0.91 torr and CO(,2) R(6)(,10) laser pulse energy of 60 mJ. The cell design and frequency characteristics are presented as an Appendix. Infrared-microwave double-resonance experiments have been performed at higher microwave powers than reported in the literature. Two previously unreported double-resonances have been observed using a CO(,2) laser, aQR(2,1) (P(40)(,9) + 33.05 GHz) and aQR(2,2) (P(40)(,9) + 34.14 GHz). The cells designed and the data acquisition techniques developed are presented. The linear and non-linear (i.e., single and multiple photon) spectroscopy of ('14)NH(,3) is considered in detail as the subject of an Appendix. Tables of energy levels, ground state inversion transitions, and laser-NH(,3) absorption matches are also included. Made available in DSpace on 2014-12-12T20:55:14Z (GMT). No. of bitstreams: 1 8026552.pdf: 4068543 bytes, checksum: da538ec6230862db9359c508858dff7a (MD5) Previous issue date: 1980 Embargo set by: Seth Robbins for item 66412 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 137 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1980. http://hdl.handle.net/2142/66233 (UMI)AAI8026552 eng Physics, Molecular An Optically-Pumped Frequency Stable Tunable Maser and Infrared-Microwave Double-Resonance Experiments in Ammonia text Electrical Engineering Electrical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.