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

N. Torikai, M. Furusaka, H. Matsuoka, Y. Matsushita, M. Shibayama, Atsushi Takahara, M. Takeda, S. Tasaki, H. Yamaoka

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

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.

Original languageEnglish
JournalApplied Physics A: Materials Science and Processing
Volume74
Issue numberSUPPL.I
DOIs
Publication statusPublished - Dec 1 2002

Fingerprint

reflectometers
Reflectometers
Neutrons
neutron sources
thermal neutrons
neutrons
Neutron sources
moderators
specular reflection
neutron beams
spallation
reinforcement
ambient temperature
momentum transfer
Japan
Neutron beams
Moderators
Momentum transfer
reflectance
geometry

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Instrumental design and performance of a new pulsed-neutron reflectometer (ARISA) at KENS for studying free surfaces. / Torikai, N.; Furusaka, M.; Matsuoka, H.; Matsushita, Y.; Shibayama, M.; Takahara, Atsushi; Takeda, M.; Tasaki, S.; Yamaoka, H.

In: Applied Physics A: Materials Science and Processing, Vol. 74, No. SUPPL.I, 01.12.2002.

Research output: Contribution to journalArticle

Torikai, N. ; Furusaka, M. ; Matsuoka, H. ; Matsushita, Y. ; Shibayama, M. ; Takahara, Atsushi ; Takeda, M. ; Tasaki, S. ; Yamaoka, H. / Instrumental design and performance of a new pulsed-neutron reflectometer (ARISA) at KENS for studying free surfaces. In: Applied Physics A: Materials Science and Processing. 2002 ; Vol. 74, No. SUPPL.I.
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