QUADRUPOLAR INTERACTIONS IN NONCUBIC CRYSTAL AND RELATED EXTRA HEAT-CAPACITIES - POSSIBLE EFFECTS ON A SAPPHIRE BOLOMETER

Authors
BASSOU M ROTTER M BERNIER M CHAPELLIER M
Citation
M. Bassou et al., QUADRUPOLAR INTERACTIONS IN NONCUBIC CRYSTAL AND RELATED EXTRA HEAT-CAPACITIES - POSSIBLE EFFECTS ON A SAPPHIRE BOLOMETER, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 370(1), 1996, pp. 198-199
Citations number
3
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
370
Issue
1
Year of publication
1996
Pages
198 - 199
Database
ISI
SICI code
0168-9002(1996)370:1<198:QIINCA>2.0.ZU;2-6
Abstract
It is shown that in a non-cubic crystal, the extra heat capacity due t o quadrupolar interaction of nuclear spins >1/2 could be much bigger t han the phonon heat capacity when the temperature decreases. The possi ble coupling between quadrupolar and phonon heat reservoir via paramag netic impurities is stressed. A NMR experiment done on sapphire is pre sented with an evaluation of the coupling between the two reservoirs a nd its consequence on the performance of the bolometer.