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Mochel, J.M. Rascoe, Daniel Lee 2011-06-30T15:49:35Z 2011-06-30T15:49:35Z 10000-01-01 1978 "Progress in the development of a tunable monochromatic phonon detector for use in experiments investigating the transmission of phonons (v > 10 GHz) through 4He at T S 0.1 K and 0 < P < 24 bars is described. The technique studied was the use of a magnetically tuned spin 1/2 system whose change in magnetization with incident phonon flux can be monitored by a pick-up coil coupled to a SQUID magnetometer. Time-of-flight measurements versus pressure and tuning magnetic field were made to test the detection technique and showed good agreement with the measurements of others for phonon velocity and scattering in 4He versus pressure, but limited sensitivity to the magnetic field. We investigate probable causes of the ""broad band"" spectral behavior of this detector and make recommendations for future work and technique improvement." Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-30T15:49:34Z No. of bitstreams: 1 1978_rascoe.pdf: 3586619 bytes, checksum: 11b2155ef81d64304319ce27ff28b52b (MD5) Made available in DSpace on 2011-06-30T15:49:35Z (GMT). No. of bitstreams: 1 1978_rascoe.pdf: 3586619 bytes, checksum: 11b2155ef81d64304319ce27ff28b52b (MD5) Previous issue date: 1978 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-30T15:49:35Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:32:29-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 355975 http://hdl.handle.net/2142/25599 en 1978 Daniel Lee Rascoe phonon detector tunable monochromatic phonon detector magnetically tuned spin SQUID magnetometer A search for a new phonon detector Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.