Back to Search
Start Over
Modeling the energy thermalization of X-ray photons in a microcalorimeter with superconducting absorber
- Source :
- X-Ray and Gamma-Ray Telescope and Instruments for Astronomy, San Diego (CA, USA), 2003, info:cnr-pdr/source/autori:Perinati, Emanuele; Barbera, Marco; Collura, Alfonso; Serio, Salvatore; Silver, Eric H.; Beeman, Jeffrey W.; Haller, Eugene E.; Landis, Don A.; Madden, Norman W./congresso_nome: X-Ray and Gamma-Ray Telescope and Instruments for Astronomy/congresso_luogo:San Diego (CA, USA)/congresso_data:2003/anno:2003/pagina_da:/pagina_a:/intervallo_pagine
- Publication Year :
- 2002
-
Abstract
- We present a modeling of the response of a microcalorimeter to the absorption of X-ray photons, based on the main microscopical processes responsible for the energy thermalization. In particular, we have modeled a microcalorimeter with superconducting tin absorber (350 micron x 350 micron x 7 micron) and neutron transmutation doped (NTD) germanium thermistor (75 micron x 50 micron x 150 micron). Such a detector, operated at 60 mK, is expected to achieve a spectral resolution as good as 1 eV FWHM in the soft X-ray energy range, based on the known sources of thermal and electronic noise. Nevertheless, the best spectral resolution measured in laboratory experimental tests is of about 5 eV FWHM (at 5.89 keV). We have investigated how the microscopic processes of energy thermalization, involving both quasiparticles and phonons, and the position of absorption of the photons may affect the spectral resolution of the detector.
- Subjects :
- Physics
Range (particle radiation)
Photon
Physics::Instrumentation and Detectors
Phonon
business.industry
chemistry.chemical_element
Germanium
Thermalization
Condensed Matter Physics
Optics
Thermalisation
chemistry
Microcalorimeter
X-ray spectroscopy
Neutron
Atomic physics
Spectral resolution
Electrical and Electronic Engineering
business
Absorption (electromagnetic radiation)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- X-Ray and Gamma-Ray Telescope and Instruments for Astronomy, San Diego (CA, USA), 2003, info:cnr-pdr/source/autori:Perinati, Emanuele; Barbera, Marco; Collura, Alfonso; Serio, Salvatore; Silver, Eric H.; Beeman, Jeffrey W.; Haller, Eugene E.; Landis, Don A.; Madden, Norman W./congresso_nome: X-Ray and Gamma-Ray Telescope and Instruments for Astronomy/congresso_luogo:San Diego (CA, USA)/congresso_data:2003/anno:2003/pagina_da:/pagina_a:/intervallo_pagine
- Accession number :
- edsair.doi.dedup.....7312db8746b77dea074c025416ef1570