Non-dispersive measurement of the transverse coherence length of a cold neutron beam

被引：5

作者：

Kitaguchi, M ^{[1
]}

Funahashi, H

Nakura, T

Taketani, K

Hino, M

Otake, Y

Shimizu, HM

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] Kyoto Univ, Inst Res Reactor, Osaka 5900494, Japan

[3] RIKEN, Wako, Saitama 3510198, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 12期

关键词：

cold neutron; intereferometry; coherence length;

D O I：

10.1143/JPSJ.72.3079

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the transverse coherence length of a cold neutron beam using Jamin-type cold neutron spin interferometer. It can control the transverse shift between the superposed two paths with no dispersion. We have observed clearly that the contrast of interference fringes varies according to the coherence function determined by the collimation of the beam. The measured coherence length was consistent with the estimate by the standard deviation of the neutron transverse momentum distribution.

引用

页码：3079 / 3081

页数：3

共 11 条

[1]

BADUREK G, 1988, MATER WAVE INTERFERO

[2]

BYRNE J, 1994, NEUTRON NUCL MATTER, pCH7

[3] Quantum precession of cold neutron spin using multilayer spin splitters and a phase-spin-echo interferometer [J].

Ebisawa, T ;

Tasaki, S ;

Kawai, T ;

Hino, M ;

Achiwa, N ;

Otake, Y ;

Funahashi, H ;

Yamazaki, D ;

Akiyoshi, T .

PHYSICAL REVIEW A, 1998, 57 (06) :4720-4729

[4] Interferometer for cold neutrons using multilayer mirrors [J].

Funahashi, H ;

Ebisawa, T ;

Haseyama, T ;

Hino, M ;

Masaike, A ;

Otake, Y ;

Tabaru, T ;

Tasaki, S .

PHYSICAL REVIEW A, 1996, 54 (01) :649-651

[5] DIRECT MEASUREMENT OF THE LONGITUDINAL COHERENCE LENGTH OF A THERMAL-NEUTRON BEAM [J].

KAISER, H ;

WERNER, SA ;

GEORGE, EA .

PHYSICAL REVIEW LETTERS, 1983, 50 (08) :560-563

[6] Cold-neutron interferometer of the Jamin type [J].

Kitaguchi, M ;

Funahashi, H ;

Nakura, T ;

Hino, M ;

Shimizu, HM .

PHYSICAL REVIEW A, 2003, 67 (03) :4

[7] Jamin-type interferometer for cold neutrons using etalon plates [J].

Kitaguchi, M ;

Funahashi, H ;

Nakura, T ;

Hino, M ;

Shimizu, HM .

ADVANCES IN NEUTRON SCATTERING INSTRUMENTATION, 2002, 4785 :104-111

[8] TEST OF A SINGLE-CRYSTAL NEUTRON INTERFEROMETER [J].

RAUCH, H ;

TREIMER, W ;

BONSE, U .

PHYSICS LETTERS A, 1974, A 47 (05) :369-371

[9] Measurement and characterization of the three-dimensional coherence function in neutron interferometry [J].

Rauch, H ;

Wolwitsch, H ;

Kaiser, H ;

Clothier, R ;

Werner, SA .

PHYSICAL REVIEW A, 1996, 53 (02) :902-908

[10]

Rauch H., 2000, NEUTRON INTERFEROMET

← 1 2 →