Refine your search�ソスF     
Report No.
 - 

Applications of MgF$$_{2}$$ focusing lens to small-angle neutron scattering

Iwase, Hiroki; Koizumi, Satoshi; Oku, Takayuki   ; Suzuki, Junichi

Since a small-angle scattering technique detects forward scattering with a narrowly collimated incident beam, a lack of luminance is a crucial problem. In order to overcome it, we utilize a neutron focusing lens of biconcave-shaped MgF$$_{2}$$ single crystal, whose effective area is 25mm. We performed test measurements on small-angle neutron scattering spectrometer SANS-J at JRR-3M, JAERI, with 10m camera length and incident neutron of $$lambda=6.5 mathrm{AA}$$. We successfully extended the lower $$Q _{limit} $$($$Q_{min}$$) down to $$3times10^{-4 }mathrm{AA}^{-1}$$, with a pinhole of 2mm$$phi$$ at the entry of collimator and a pile of 70 lenses at the sample position. With keeping conventional $$Q_{min}=3times10^{-3} mathrm{AA}^{-1}$$, we had intensity gain of $$times3$$ with a pin hole of 20mm$$phi$$ at the entry and 40 lenses at the sample position.

Accesses

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.