Measurement of the Fermi potential of diamond-like carbon and other materials

被引：22

作者：

Atchison, F.

Blau, B.

Daum, M. ^{[1
]}

Fierlinger, P.

Geltenbort, P.

Gupta, M.

Henneck, R.

Heule, S.

Kasprzak, M.

Knecht, A.

Kuzniak, M.

Kirch, K.

Meier, M.

Pichlmaier, A.

Reiser, R.

Theiler, B.

Zimmer, O.

Zsigmond, G.

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[2] Univ Zurich, Inst Phys, CH-8006 Zurich, Switzerland

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[4] Jagiellonian Univ, PL-31007 Krakow, Poland

[5] Stefan Meyer Inst, Vienna, Austria

[6] Tech Univ Munich, Dept Phys, D-8000 Munich, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 260卷 / 02期

关键词：

ultracold neutrons; slow neutron transmission; cold neutron reflectornetry;

D O I：

10.1016/j.nimb.2007.04.253

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Fermi potential V-f of diamond-like carbon (DLC) coatings produced with laser-controlled vacuum arc deposition and that of diamond, Al, Si, Be, Cu, Fe and Ni was measured using two different methods, (i) transmission of slow neutrons through foils in a time-of-flight experiment and (ii) cold neutron reflectometry (CNR). For diamond-like carbon in transmission we obtain V-f = (249 +/- 14) neV. This is approximately the same as for beryllium and consistent with the theoretical expectations for the measured diamond (Sp) content of 45%. For an sp(3)-content of 67%, we find V-f = (271 +/- 13) neV from reflectometry, again in agreement with theory. These findings open new perspectives in using DLC as storage volume and neutron guide coatings for ultracold neutron sources. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：647 / 656

页数：10

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