Acoustic excitation of the circular Bragg{endash}Fresnel lens in backscattering geometry

Journal Article · Sat Feb 01 00:00:00 EST 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.118240· OSTI ID:467145

Souvorov, A; Snigireva, I; Snigirev, A ^[1]; Aristova, E; Hartman, Y ^[2]

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1. ESRF, 38043 Grenoble Cedex (France)
2. Institute of Microelectronics Technology RAS, 142432 Chernogolovka (Russia)

An increment of the x-ray flux in crystal Bragg{endash}Fresnel lens (BFL) focus in backscattering geometry obtained by means of acoustic excitation of the BFL crystal substrate has been investigated. The dependence of the x ray{close_quote}s total reflected power versus ultrasound parameters has been studied in a low frequency range (10{endash}50 MHz). The proposed technique allows an increase in the flux in a BFL focus by a factor of 2 which almost achieves the kinematic limit. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 467145
• Journal Information: Applied Physics Letters, Vol. 70, Issue 7; Other Information: PBD: Feb 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
X RADIATION
BEAM OPTICS
LENSES
FRESNEL LENS
BACKSCATTERING
REFLECTION
ULTRASONIC WAVES
FOCUSING