Microcalorimeters for high resolution x-ray spectroscopy

Conference · Tue Apr 09 04:00:00 EDT 1991

OSTI ID:5551034

Silver, E; Labov, S; Pfafman, T; Wai, Y ^[1]; Beeman, J; Goulding, F; Landis, D; Madden, N; Haller, E ^[2]

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1. Lawrence Livermore National Lab., CA (USA)
2. Lawrence Berkeley Lab., CA (USA)

We are developing microcalorimeters for high resolution x-ray spectroscopy of cosmic sources. To date, we have achieved an energy resolution of 20 eV for 6 keV x-rays with resistive calorimeters using a superconducting niobium film as an x-ray absorber. This measurement was made at a temperature of 0.1 K in an adiabatic demagnetization refrigerator. Our group is also investigating the properties of dielectric and inductive thermal sensors, which, in principal, could provide resolution performance beyond what is achievable by resistive sensors. Our most recent experiments are discussed here. 23 refs., 16 figs.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5551034
• Report Number(s): UCRL-JC-107599; CONF-9012102--2; ON: DE91015692
• Country of Publication: United States
• Language: English

Related Subjects

440104* -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ENERGY RESOLUTION
MEASURING INSTRUMENTS
PERFORMANCE
RADIATION DETECTORS
RESOLUTION
SHOWER COUNTERS
SPECTRA
SPECTROSCOPY
TEMPERATURE DEPENDENCE
X-RAY SPECTRA
X-RAY SPECTROSCOPY