Guiding hard x rays with glass polycapillary fiber

Conference · Fri Dec 31 04:00:00 EST 1993

OSTI ID:10114030

Xiao, Q F; Ponomarev, I Y; Kolomitsev, A I; Gibson, D M ^[1]; Dilmanian, F A; Nachaliel, E ^[2]

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1. X-Ray Optical Systems, Inc., Albany, NY (United States)
2. Brookhaven National Lab., Upton, NY (United States)

X rays can be guided through a polycapillary fiber by multiple total reflections from the smooth channel walls of the fiber. Using monochromatic Synchrotron Radiation at energies of 22 and 44 keV, we measured the efficiency of transmission of x rays through polycapillary fibers with channel diameters of about 13 {mu}m. Efficiencies of 57.3% and 54.5% for 22 keV and 44 keV x rays, respectively, were obtained with a 120-mm-long straight polycapillary fiber aligned with the incident beam. These values are close to the open fraction of the fiber, which is about 60%. In addition, transmission efficiency was measured as a function of the tilt angle between the incident beam and the axis of the fiber. We also measured the transmission efficiency as a function of the deflection angle for a 114-mm-long curved polycapillary fiber. The measurements are compared with a ray-tracing simulation.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016; FG02-91ER81221
• OSTI ID: 10114030
• Report Number(s): BNL--49773; CONF-930824--31; ON: DE94004949; BR: KM0000000
• Country of Publication: United States
• Language: English

Related Subjects

440100
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
661300
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FIBER OPTICS
INCIDENCE ANGLE
LIGHT TRANSMISSION
OPTICAL FIBERS
OPTICAL MODELS
OPTICAL PROPERTIES
OPTICAL REFLECTION
OTHER ASPECTS OF PHYSICAL SCIENCE
RADIATION INSTRUMENTATION
X RADIATION