Laboratory astrophysics using an XRS engineering model microcalorimeter

Details Laboratory astrophysics using an XRS engineering model microcalorimeter Laboratory astrophysics using an XRS engineering model microcalorimeter

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..605..421p&link_type=abstract

LOW TEMPERATURE DETECTORS: Ninth International Workshop on Low Temperature Detectors. AIP Conference Proceedings, Volume 605, p

Astronomy and Astrophysics

Astrophysics

1

Laboratory Studies Of Space- And Astrophysical-Plasma Processes, X-Ray And Gamma-Ray Measurements

Scientific paper

We have recently deployed an XRS (the X-ray Spectrometer on the Astro-E mission) engineering model microcalorimeter at the electron beam ion traps (EBIT I/II) at Lawrence Livermore National Laboratory. The EBIT I/II can produce well defined astrophysically interesting plasmas for a wide range of plasma conditions. The XRS engineering model was mated with a 32 element XRS 6×6 microcalorimeter array and integrated into a laboratory cryostat. The system was then transported to the EBIT I/II and operated over the last year. The microcalorimeter array has a composite resolution of 8 eV at 1 keV and 11 eV at 6 keV. During the campaign, we performed a number of high resolution, broad band observations including: K and L shell Fe with single ionization energies from 1-8 keV, Maxwellian distributions of Fe with =0.5-3 keV, non-equilibrium states of Fe with very fine time resolution for ɛ=109-1012 s cm-3. The total observation time for the campaign was over 10 Ms and the analysis is ongoing. We will present here an overview of the instrument and a few of the preliminary results. The results of these experiments show the power and promise of the XRS microcalorimeter and give a detailed picture of how the instrument would have performed in orbit on Astro-E, and will perform in the future on the Astro-E2 mission. .

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