B-MINE The Balloon-Borne Microcalorimeter Nuclear Line Explorer Mission

Details B-MINE The Balloon-Borne Microcalorimeter Nuclear Line Explorer Mission B-MINE The Balloon-Borne Microcalorimeter Nuclear Line Explorer Mission

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.4325s&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #43.25; Bulletin of the American Astronomical Society, Vol. 32, p.1263

Physics

Optics

Scientific paper

B-MINE will probe the deepest regions of a supernova explosion by detecting 44Ti emission at 68 keV with spatial and spectral resolutions that are sufficient to determine the spatial extent and velocity distribution of the 44Ti emitting region. The payload introduces the concept of focusing optics and microcalorimeter spectroscopy to nuclear line emission astrophysics. B-MINE has a thin, plastic foil telescope multilayered to maximize the reflectivity in a 20 keV band centered at 68 keV and a microcalorimeter array optimized for the same energy band. This combination provides a reduced background and allows an energy resolution of 50 eV and a 3 σ sensitivity in 106 s of 3.3 x 10-7 ph cm-2 s-1 at 68 keV. During the course of a long duration balloon flight, B-MINE will carry out a detailed study of the 44Ti emission line centroid and width in CAS A.

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