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Polarized neutron radiography allows the direct and real-space visualization of magnetic field distribution by detecting the polarization change in the transmitted beam. Spin polarizer/analyzer apparatus is important in polarized neutron imaging system, whose polarization efficiency directly affects the imaging quality of magnetic field. In this paper, the relation between the registered neutron intensity and magnetic field distribution is re-calculated after introducing the polarization efficiency parameter. Bender polarizers and 3He spin filters are simulated by Monte Carlo software VITESS to verify the calculation. The quantification ability with low beam polarization is also analyzed by considering the beam monochromaticity and bender geometry. The results will be helpful for processing image data and designing instrument.
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Keywords:
- polarization efficiency /
- neutron radiography /
- magnetic field imaging
[1] Arif M 2008 Neutron Radiography: Proceedings of the Eighth World Conference (Lancaster: Destech Publications)
[2] Kardjilov N, Manke I, Strobl M, Hilger A, Treimer W, Meissner M, Krist T, Banhart J 2008 Nat. Phys. 4 399
[3] Piegsa F M, Brandt B, Hautle P, Konter J A 2008 Nucl. Instr. Meth. A 586 15
[4] Strobl M, Pappas C, Hilger A, Wellert S, Kardjilov N, Seidel S O, Manke I 2011 Physica B 406 2415
[5] Manke I, Kardjilov N, Strobl M, Hilger A, Banhart J 2008 J. Appl. Phys. Lett. 89 094102
[6] Dawson M, Manke I, Kardjilov N, Hilger A, Strobl M, Banhart J 2009 New J. Phys. 11 043013
[7] Piegsa F M, Brandt B, Hautle P, Kohlbrecher J, Konter J A 2009 Phys. Rev. lett. 102 145501
[8] Schulz M, Schmakat P, Franz C, Neubauer A, Calzada E, Schillinger B, Boni P, Pfleiderer C 2011 Physica B 406 2412
[9] Treimer W, Ebrahimi O, Karakas N, Seidel S O 2012 Nucl. Instr. Meth. A 651 53
[10] Treimer W, Ebrahimi O, Karakas N, Prozorov R 2012 Phys. Rev. B 85 184522
[11] Zeng J Y 2000 Quantum Mechanics (3rd Ed.) (Beijing: Science Press) pp16-30 (in Chinese) 曾谨言 2000 量子力学(第三版卷II) (北京: 科学出版社) 第16-30
[12] Dawson M, Kardjilov N, Manke I, Hilger A, Jullien D, bordenave F, Strobl M, Jericha E, Badurek G, Banhart J 2011 Nucl. Instr. Meth. A 651 140
[13] Williams W G 1988 Polarized Neutrons.Oxford Series on Neutron Scattering in Condensed Matter, Vol. 1 (Oxford: Clarendon Press)
[14] Zhao J K 2012 Nucl. Instr. Meth. A 668 59
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[1] Arif M 2008 Neutron Radiography: Proceedings of the Eighth World Conference (Lancaster: Destech Publications)
[2] Kardjilov N, Manke I, Strobl M, Hilger A, Treimer W, Meissner M, Krist T, Banhart J 2008 Nat. Phys. 4 399
[3] Piegsa F M, Brandt B, Hautle P, Konter J A 2008 Nucl. Instr. Meth. A 586 15
[4] Strobl M, Pappas C, Hilger A, Wellert S, Kardjilov N, Seidel S O, Manke I 2011 Physica B 406 2415
[5] Manke I, Kardjilov N, Strobl M, Hilger A, Banhart J 2008 J. Appl. Phys. Lett. 89 094102
[6] Dawson M, Manke I, Kardjilov N, Hilger A, Strobl M, Banhart J 2009 New J. Phys. 11 043013
[7] Piegsa F M, Brandt B, Hautle P, Kohlbrecher J, Konter J A 2009 Phys. Rev. lett. 102 145501
[8] Schulz M, Schmakat P, Franz C, Neubauer A, Calzada E, Schillinger B, Boni P, Pfleiderer C 2011 Physica B 406 2412
[9] Treimer W, Ebrahimi O, Karakas N, Seidel S O 2012 Nucl. Instr. Meth. A 651 53
[10] Treimer W, Ebrahimi O, Karakas N, Prozorov R 2012 Phys. Rev. B 85 184522
[11] Zeng J Y 2000 Quantum Mechanics (3rd Ed.) (Beijing: Science Press) pp16-30 (in Chinese) 曾谨言 2000 量子力学(第三版卷II) (北京: 科学出版社) 第16-30
[12] Dawson M, Kardjilov N, Manke I, Hilger A, Jullien D, bordenave F, Strobl M, Jericha E, Badurek G, Banhart J 2011 Nucl. Instr. Meth. A 651 140
[13] Williams W G 1988 Polarized Neutrons.Oxford Series on Neutron Scattering in Condensed Matter, Vol. 1 (Oxford: Clarendon Press)
[14] Zhao J K 2012 Nucl. Instr. Meth. A 668 59
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