loading

Modulation spectrometry of neutrons with diffractometry applications / Pekka Hiismaki

Tác giả : Pekka Hiismaki

Nhà xuất bản : World Scientific

Năm xuất bản : 1997

Nơi xuất bản : Singapore

Mô tả vật lý : x, 177 p. : ill. ; 23 cm.

ISBN : 9810227469

Số phân loại : 539.7213

Chủ đề : 1. Điều chế quang phổ. 2. Nơ-tron -- Đo lường -- Nhiễu xạ. 3. Nơ-tron -- Phân tán -- Đo lường. 4. Modulation spectroscopy. 5. Neutrons -- Diffraction -- Measurement. 6. Neutrons -- Measurement -- Scattering. 7. Nơ-tron. 8. Vật lý hạt, bức xạ ion.

Thông tin chi tiết

Tóm tắt :

Modulation spectroscoy of neutrons refers to a measuring principle, characterized by classification of neutron histories in a probabilistic way, not the usual deterministic way. In order to accomplish this, neutron beams entering the sample are modulated by hightransmission, white beam selectors of the multislit type, such as Fourier or statistical choppers of highfrequency modulated spinflippers. In this scheme it is impossible to decide in a unique way through which particular slit any single neutron passed, but the distribution of histories for a large population of neutrons can nevertheless be correctly obtained, but classifying each conceivable history either as a high-probability event, based on the actual observed state of the neutron selector. So far the principle has been successfully applied to powder diffraction, but seems to offer extra degrees of freedom, if applied to measuring dispersion curves of coherent exitations, such as phonons in single crystals.

 Thông tin dữ liệu nguồn

 Thư viện  Ký hiệu xếp giá  Dữ liệu nguồn
Thư viện đại học Cần Thơ
https://lrcopac.ctu.edu.vn/pages/opac/wpid-detailbib-id-210430.html