Focusing cold neutrons with multiple biconcave lenses for small-angle neutron scattering

被引:140
作者
Choi, SM [1 ]
Barker, JG
Glinka, CJ
Cheng, YT
Gammel, PL
机构
[1] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[2] Univ Maryland, Dept Mat & Nucl Engn, College Pk, MD 20742 USA
[3] NeuTek, Darnestown, MD 20878 USA
[4] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA
关键词
D O I
10.1107/S0021889800099799
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The focusing of a cold neutron beam by multiple biconcave lenses has recently been proposed as a practical means of extending the lower limit of Q in conventional, long flight-path small-angle neutron scattering (SANS) instruments. To test the feasibility of this approach, we have carried out extensive measurements on one of the 30 m SANS instruments at NIST of the focusing characteristics of a set of 28 biconcave MgF2 lenses. The focused beam profile has been measured over several orders of magnitude using high resolution neutron auto-radiography. The focusing lens configuration outperforms the pinhole collimation at Q(min) lower than 0.004 Angstrom(-1). At Q(min) = 0.001 Angstrom(-1), the intensity gain of the lens configuration over the pinhole collimation is greater than one order of magnitude.
引用
收藏
页码:793 / 796
页数:4
相关论文
共 9 条
[1]   High-resolution focusing SANS with a toroidal neutron mirror [J].
Alefeld, B ;
Hayes, C ;
Mezei, F ;
Richter, D ;
Springer, T .
PHYSICA B-CONDENSED MATTER, 1997, 234 :1052-1054
[2]  
BARKER JG, 1993, SPIE P, V1738, P386
[3]  
Born M., 1975, PRINCIPLES OPTICS
[4]   Compound refractive optics for the imaging and focusing of low-energy neutrons [J].
Eskildsen, MR ;
Gammel, PL ;
Isaacs, ED ;
Detlefs, C ;
Mortensen, K ;
Bishop, DJ .
NATURE, 1998, 391 (6667) :563-566
[5]   The 30 m small-angle neutron scattering instruments at the National Institute of Standards and Technology [J].
Glinka, CJ ;
Barker, JG ;
Hammouda, B ;
Krueger, S ;
Moyer, JJ ;
Orts, WJ .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1998, 31 :430-445
[6]   STUDIES OF VOIDS IN NEUTRON-IRRADIATED ALUMINUM SINGLE-CRYSTALS .2. SMALL-ANGLE NEUTRON-SCATTERING [J].
HENDRICKS, RW ;
SCHELTEN, J ;
SCHMATZ, W .
PHILOSOPHICAL MAGAZINE, 1974, 30 (04) :819-837
[7]  
LARTIGUE C., 1995, J NEUT RES, V5, P71
[8]   USE OF NEUTRON OPTICAL DEVICES ON BEAM-HOLE EXPERIMENTS [J].
MAIERLEIBNITZ, H ;
SPRINGER, T .
JOURNAL OF NUCLEAR ENERGY PARTS A AND B-REACTOR SCIENCE AND TECHNOLOGY, 1963, 17 (4-5) :217-&
[9]  
Sears V.F., 1989, NEUTRON OPTICS