Laue Gamma-Ray Lenses for Space Astrophysics: Status and Prospects

Frontera, F.; Ballmoos, P. von

doi:10.1155/2010/215375

Cited by 44 publications

(29 citation statements)

References 46 publications

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“…Laue transmission geometry [8], to concentrate rays in the focal plane. These socalled Laue lenses promise to significantly increase sensitivity compared to existing collimator optics [9][10][11], in particular in the 0.1-1 MeV range. Although Laue lenses are not true imaging systems, deconvolution techniques exist for reconstruction of the field of view [12].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of multilayer reflective optics at photon energies above 06 MeV

Brejnholt¹,

Soufli²,

Descalle³

et al. 2014

Opt. Express

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Focusing optics operating in the soft gamma-ray photon energy range can advance a range of scientific and technological applications that benefit from the large improvements in sensitivity and resolution that true imaging provides. An enabling technology to this end is multilayer coatings. We show that very short period multilayer coatings deposited on super-polished substrates operate efficiently above 0.6 MeV. These experiments demonstrate that Bragg scattering theory established for multilayer applications as low as 1 eV continues to work well into the gamma-ray band. 428-438 (1913). 14. P. Kirkpatrick and A. V. Baez, "Formation of optical images by x-rays," J. Opt. Soc. Am. 38, 766-773 (1948)

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Section: Introductionmentioning

confidence: 99%

Demonstration of multilayer reflective optics at photon energies above 06 MeV

Brejnholt¹,

Soufli²,

Descalle³

et al. 2014

Opt. Express

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“…4 However, this kind of crystals suffers 50%-maximum in reflectivity at zero absorption (diffraction efficiency) and spatial resolution of diffracted photons is limited because of the so-called mosaic defocusing effect. 5,6 Conversely, crystals with curved diffracting planes (CDP) offer a continuum of possible diffraction angles over a finite range, leading to a rectangular-shape energy passband directly owing to their curvature, while the diffraction efficiency can reach 100%.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of quasi-mosaic Ge crystals for the LAUE project

et al. 2013

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A series of quasi-mosaic curved crystals has been fabricated for the Laue project to build up a prototype of a Laue lens. Curvature has been imparted to the samples thanks to the grooving method, which makes it possible to realize self-standing curved plates. Samples are 10 × 30 × 2 mm3 Ge crystals characterized by two curvatures of different crystallographic planes. The primary curvature allows the focalization of the diffracted X-rays on a focal spot smaller than the crystal dimension. The secondary curvature, i.e. quasi-mosaic curvature, amplifies the diffraction efficiency by more than one order of magnitude with respect to an equivalent crystal without quasi-mosaic curvature. © (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only

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“…Ref. [1][2][3] ). Perfect crystals are not suitable for Laue lens applications as they behave as monochromators.…”

Section: Introductionmentioning

confidence: 99%

LAUE lens development at UC Berkeley: status and prospects

et al. 2013

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We report on the status of the Laue lens development effort led by UC Berkeley, where a dedicated X-ray beamline and a Laue lens assembly station were built. This allowed the realization of a first lens prototype in June 2012. Based on this achievement, and thanks to a new NASA APRA grant, we are moving forward to enable Laue lenses. Several parallel activities are in progress. Firstly, we are refining the method to glue quickly and accurately crystals on a lens substrate. Secondly, we are conducting a study of high-Z crystals to diffract energies up to 900 keV efficiently. And thirdly, we are exploring new concepts of Si-based lenses that could further improve the focusing capabilities, and thus the sensitivity of Laue lenses.

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Laue Gamma-Ray Lenses for Space Astrophysics: Status and Prospects

Abstract: We review feasibility studies, technological developments, and the astrophysical prospects for Laue lenses devoted to hard X-/gamma-ray astronomy observations.

Cited by 44 publications

References 46 publications

Demonstration of multilayer reflective optics at photon energies above 06 MeV

Demonstration of multilayer reflective optics at photon energies above 06 MeV

Fabrication of quasi-mosaic Ge crystals for the LAUE project

LAUE lens development at UC Berkeley: status and prospects

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