Neutron refraction by cylindrical metal wires

被引：10
作者：
Plomp, J. [1 ]
Barker, J. G.
de Haan, V. O.
Bouwman, W. G.
van Well, A. A.
机构：
[1] Delft Univ Technol, Fac Sci Appl, Delft, Netherlands
[2] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 574卷 / 02期
基金：
美国国家科学基金会;
关键词：
USANS; SESANS; neutron refraction; coil; spin-echo;
D O I：
10.1016/j.nima.2007.02.068
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Undesired Small-Angle Neutron Scattering (SANS) from interior features of an object can be minimised by reducing the sample thickness. However, refraction effects produced by the exterior shape of the object depend upon the scattering cross-section and not on the thickness of the object. In the field of polarised neutrons a wire coil is often used to manipulate the polarisation vector of the neutron. In this paper, we show that the cylindrical shape of the wire together with the refractive index introduces an angular distribution in the neutron beam. This can be observed in instrumentation sensitive to SANS. We show results measured on three different SANS instruments: Ultra Small-Angle Neutrons Scattering (USANS), Spin-Echo Small-Angle Neutron Scattering (SESANS) and a Time-of-Flight (TOF) SESANS. These results are all in good agreement with the theory of refraction. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：324 / 329
页数：6
相关论文
共 12 条
  • [1] Design and performance of a thermal-neutron double-crystal diffractometer for USANS at NIST
    Barker, JG
    Glinka, CJ
    Moyer, JJ
    Kim, MH
    Drews, AR
    Agamalian, M
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2005, 38 : 1004 - 1011
  • [2] SESANS studies of colloid phase transitions, dairy products and polymer fibres
    Bouwman, WG
    Krouglov, TV
    Plomp, J
    Grigoriev, SV
    Kraan, WH
    Rekveldt, MT
    [J]. PHYSICA B-CONDENSED MATTER, 2004, 350 (1-3) : 140 - 146
  • [3] SESANS with a monochromatic beam or with time-of-flight applied on colloidal systems
    Bouwman, WG
    Stam, W
    Krouglov, TV
    Plomp, J
    Grigoriev, SV
    Kraan, WH
    Rekveldt, MT
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 529 (1-3) : 16 - 21
  • [4] Focusing cold neutrons with multiple biconcave lenses for small-angle neutron scattering
    Choi, SM
    Barker, JG
    Glinka, CJ
    Cheng, YT
    Gammel, PL
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2000, 33 (01) : 793 - 796
  • [5] Phase-object approximation in small-angle neutron scattering experiments on silicon gratings
    de Haan, Victor-O.
    Plomp, Jeroen
    Bouwman, Wim G.
    Trinker, Martin
    Rekveldt, M. Theo
    Duif, Chris P.
    Jericha, Erwin
    Rauch, Helmut
    van Well, Ad A.
    [J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2007, 40 : 151 - 157
  • [6] EXPERIMENTAL LIMIT FOR THE CHARGE OF THE FREE NEUTRON
    GAHLER, R
    KALUS, J
    MAMPE, W
    [J]. PHYSICAL REVIEW D, 1982, 25 (11): : 2887 - 2894
  • [7] Time-of-flight spin-echo small-angle neutron measurements
    Plomp, J.
    de Haan, V. O.
    Dalgliesh, R. M.
    Langridge, S.
    van Well, A. A.
    [J]. PHYSICA B-CONDENSED MATTER, 2007, 397 (1-2) : 76 - 78
  • [8] Neutron spin-echo labelling at OffSpec, an ISIS second target station project
    Plomp, J.
    de Haan, V. O.
    Dalgliesh, R. M.
    Langridge, S.
    van Well, A. A.
    [J]. THIN SOLID FILMS, 2007, 515 (14) : 5732 - 5735
  • [9] Neutron spin echo scattering angle measurement (SESAME)
    Pynn, R
    Fitzsimmons, MR
    Fritzsche, H
    Gierlings, M
    Major, J
    Jason, A
    [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2005, 76 (05)
  • [10] Neutron refraction and transmission studied by SESANS
    Rekveldt, M. Theo
    Bouwman, Wim G.
    Kraan, Wicher H.
    Plomp, Jeroen
    [J]. PHYSICA B-CONDENSED MATTER, 2004, 350 (1-3) : E791 - E794
12