Instrumental design and performance of a new pulsed-neutron reflectometer (ARISA) at KENS for studying free surfaces

被引：0

作者：

N. Torikai

M. Furusaka

H. Matsuoka

Y. Matsushita

M. Shibayama

A. Takahara

M. Takeda

S. Tasaki

H. Yamaoka

机构：

[1] Neutron Science Laboratory,

[2] High Energy Accelerator Research Organization,undefined

[3] 1-1 Oho,undefined

[4] Tsukuba,undefined

[5] Ibaraki 305-0801,undefined

[6] Japan,undefined

[7] Department of Polymer Chemistry,undefined

[8] Kyoto University,undefined

[9] Kyoto 606-8501,undefined

[10] Japan,undefined

[11] Department of Applied Chemistry,undefined

[12] Nagoya University,undefined

[13] Nagoya 464-8603,undefined

[14] Japan,undefined

[15] Neutron Scattering Laboratory,undefined

[16] ISSP,undefined

[17] The University of Tokyo,undefined

[18] Tokai,undefined

[19] Ibaraki 319-1106,undefined

[20] Japan,undefined

[21] Institute for Fundamental Research of Organic Chemistry,undefined

[22] Kyushu University,undefined

[23] Fukuoka 812-8581,undefined

[24] Japan,undefined

[25] Physics Department,undefined

[26] Tohoku University,undefined

[27] Sendai 980-8578,undefined

[28] Japan,undefined

[29] Research Reactor Institute,undefined

[30] Kyoto University,undefined

[31] Kumatori,undefined

[32] Osaka 590-0494,undefined

[33] Japan,undefined

[34] Department of Materials Science,undefined

[35] University of Shiga Prefecture,undefined

[36] Hikone 522-8533,undefined

[37] Japan,undefined

来源：

Applied Physics A | 2002年 / 74卷

关键词：

PACS: 61.12.Ha; 68.10.-m; 68.35.-p;

D O I：

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摘要：

A new neutron reflectometer (ARISA) for studying free surfaces was installed at one of the thermal neutron ports viewing an ambient-temperature water moderator at the KENS pulsed spallation neutron source. ARISA is quite a unique reflectometer; it uses thermal neutrons at the pulsed neutron source, and it is the first one in Japan with a vertical scattering-plane geometry. The neutron beam is guided downward onto the sample surface at angles of 0–0.47° and 1.4° to the horizontal. Through several test measurements using different types of samples, it was clarified that specular reflection can be currently measured down to 10-6 in reflectivity and up to 3 nm-1 in neutron momentum transfer along the vertical direction using white neutrons with a wavelength of 0.1–0.4 (0.6) nm. This performance could be further improved by future reinforcement of the shield for background reduction.

引用

页码：s264 / s266