Contrast enhancement of data measured with area detectors: a way to generalize the use of neutron diffraction for thin-film studies

被引:2
|
作者
Bataille, Alexandre M. [1 ,2 ]
Auvray, Vincent [2 ]
Gatel, Christophe [3 ]
Gukasov, Arsen [1 ]
机构
[1] CEA Saclay, Lab Leon Brillouin, IRAMIS, F-91191 Gif Sur Yvette, France
[2] Zeliste, F-75014 Paris, France
[3] CEMES CNRS, F-31055 Toulouse, France
关键词
SPIN-DENSITY WAVES; IMAGE;
D O I
10.1107/S002188981300890X
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A denoising method is reported for the treatment of neutron scattering data obtained with position-sensitive detectors, which enhances the information obtained from weak and very weak Bragg peaks. The core element of the method is the application of a Laplacian of Gaussian filter calculated using the parameters of the resolution of the instrument. This adaptation of well established image-processing techniques offers a very efficient way to denoise the data, as shown through the application of the reported method to a study of the magnetic Bragg peaks of a 300 nm-thick epitaxial Cr film. The procedure enhances the contrast by a factor of more than 35 and thus allows precise determination of the position of the integration mask. The large contrast enhancement also lowers the detection threshold of standard elastic neutron diffractometers down to the level usually available solely on optimized triple-axis spectrometers.
引用
收藏
页码:726 / 735
页数:10
相关论文
共 3 条
  • [1] NEUTRON-DIFFRACTION STUDIES OF THIN-FILM MULTILAYER STRUCTURES
    MAJKRZAK, CF
    PHYSICA B & C, 1986, 136 (1-3): : 69 - 74
  • [2] DEVELOPMENT OF THIN-FILM PLASTIC SCINTILLATOR DETECTORS FOR USE IN IN-BEAM FISSION STUDIES
    GOLDSTONE, PD
    MALMIN, RE
    HOPKINS, F
    PAUL, P
    NUCLEAR INSTRUMENTS & METHODS, 1974, 121 (02): : 353 - 358
  • [3] DEVELOPMENT OF THIN-FILM PLASTIC SCINTILLATOR DETECTORS FOR USE IN IN-BEAM FISSION STUDIES
    GOLDSTON.PD
    MALMIN, RE
    HOPKINS, F
    PAUL, P
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1974, 19 (09): : 1026 - 1026