γ-Ray lenses taking a deeper look at sites of nucleosynthesis

Details γ-Ray lenses taking a deeper look at sites of nucleosynthesis γ-Ray lenses taking a deeper look at sites of nucleosynthesis

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006newar..50..613w&link_type=abstract

New Astronomy Reviews, Volume 50, Issue 7-8, p. 613-618.

Astronomy and Astrophysics

Astronomy

1

95.55.Ka, 98.80.Ft, 42.25.Fx

Scientific paper

Focusing of γ-rays in the nuclear-line energy regime is a feasible and promising approach for high-sensitivity γ-ray (line) studies of individual sources. This approach combines two unique advantages over “traditional” instrumentation for γ-ray astronomy: arcminute resolutions and a decoupling of collection and detection areas, with the corresponding potential for increased sensitivity. Laue Lenses use diffraction on lattice planes in the volume of a crystal to concentrate photons. Suitable crystals for MeV lenses exist, and lenses with >100 keV bandpasses and ˜arcmin fields-of-view are feasible today. Fresnel phase shift lenses present another, longer-term possibility for γ-ray focusing. The current status of instrumentation development, lens missions under consideration, and some of the nuclear astrophysics observations such instruments could enable are described.

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