Wigmore, J. K. and Steele, A. C. and Kozorezov, A. G. and Peacock, A. and den Hartog, R. and Verhoeve, P. (2003) Phonon absorption by superconducting tunnel junction x-ray detectors. Journal of Applied Physics, 93 (9). pp. 5707-5713. ISSN 1089-7550Full text not available from this repository.
Pulses of nonequilibrium phonons (heat pulses) have been used to mimic the absorption of x-ray photons in superconducting niobium tunnel junctions. For device characterization, the technique provides a valuable alternative to photoabsorption with good time resolution and continuous variability of absorbed energy. In addition, excitation is uniform across the tunnel junction, so that the effects of quasiparticle diffusion can be neglected in the analysis, and hence, the Rothwarf–Taylor equations solved exactly. Consistency is obtained between device parameters obtained from phonon measurements and those inferred from modeling of photoabsorption. In addition, the quasiparticle recombination rate can be determined directly from the nonlinearity of the energy response.
|Journal or Publication Title:||Journal of Applied Physics|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
Faculty of Health and Medicine > Health Research
|Deposited By:||Mrs Yaling Zhang|
|Deposited On:||11 Jul 2008 12:39|
|Last Modified:||26 Jul 2012 14:47|
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