M. Schlapp

Technical University of Darmstadt

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E. Salzborn

University of Giessen

R. Trassl

Applied Materials (Germany)

Heinz von Seggern

Merck (Germany)

M. Liehr

SUNY Polytechnic Institute

J. Szczech

AT&T (United States)

A. Ioffe

Heinz Maier-Leibnitz Zentrum

Ralph Gilles

Heinz Maier-Leibnitz Zentrum

Markus Hoelzel

Heinz Maier-Leibnitz Zentrum

H. Fueß

TU Bergakademie Freiberg

Z. Q. Xie

Louisiana State University

Cooperative Institutions

Argonne National Laboratory

Technical University of Darmstadt

Forschungszentrum Jülich

University of Giessen

Centre National de la Recherche Scientifique

Queen's University Belfast

University of Illinois Chicago

Heinz Maier-Leibnitz Zentrum

Technical University of Munich

Heriot-Watt University

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Novel type of neutron image plates based on KCl:Eu2+–LiF

Physica B Condensed Matter (2004)

M. Schlapp Markus Hoelzel Ralph Gilles A. Ioffe Th. Brueckel

Diffractometer

Neutron Imaging

Powder Diffractometer

10.1016/j.physb.2004.03.223

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A LOW POWER LOW COST 2.45 GHZ ECRIS F PRODUCTION OF MULTIPLY CHARGED I

M. Schlapp R. Trass M. Liehr E. Salzborn

A low cost, low power ECR ion source designed for the use on a high voltage platform with limited electrical power available, has been developed. To reduce the power consumption of the source the radial and axial magnetic confinement are produced entirely by permanent magnets. An axial magnetic mirror ratio of 2.7 is obtained by a configuration of two times four block magnets. A radial magnetic field of 0.5 T inside the plasma chamber of 60 mm inner diameter is produced by a hexapole magnet. Microwave power up to 300 watts clw can be applied to the plasma by using different slow-wave structures which allow the use of a plasma chamber much smaller in diameter than required by the wavelength of the used frequency of 2.45 GHz. The ion source can be operated in different modes either for producing multiply charged ions with intensities up to several hundred e-A or for the production of high intensity beams of singly charged ions, i.e. 6.5 mA of He' . Applications for the ion source are in crossed beams experiments and as injectors for small accelerators as well as for spectroscopic investigations in the VUV wavelength region.

Source

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New Thermal Energy Sources of H, O, Cl and N Atoms for Material Processing

Key engineering materials (1995)

Denice Higgins R. W. McCullough J Geddes J. M. Woolsey M. Schlapp

Thermal energy

10.4028/www.scientific.net/kem.99-100.177

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Citations (5)

First test measurements at the new structure powder diffractometer (SPODI) at the FRM-II

Oldenbourg Wissenschaftsverlag eBooks (2006)

Ralph Gilles Markus Hoelzel M. Schlapp F. Elf B. Krimmer

Diffractometer

Powder Diffractometer

10.1524/9783486992526-032

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Citations (1)

A 14 GHz electron-cyclotron-resonance (ECR) ion source for ion-electron collision studies

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms (1995)

M. Schlapp R. Trassl A. Heyer E. Salzborn

Electron cyclotron resonance

Ion cyclotron resonance

Faraday cup

10.1016/0168-583x(95)00179-4

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Monte Carlo simulations of various instrument configurations of the new structure powder diffractometer (SPODI)

Physica B Condensed Matter (2004)

Markus Hoelzel Ralph Gilles M. Schlapp H. Boysen H. Fueß

Diffractometer

Monochromator

Powder Diffractometer

Collimated light

10.1016/j.physb.2004.03.182

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Citations (7)

Characterization and recent modification of a compact 10 GHz ECRIS for atomic physics experiments and spectroscopic investigations

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) (2002)

M. Schlapp R. Trassl R W McCullough J. B. Greenwood E. Salzborn

A compact 10 ECR ion source (200 mm long, 170 mm diameter) has been developed and tested. The complete magnetic structure made from permanent magnet material is comprised of four ring magnets producing an asymmetric axial magnetic field and a hexapole magnet with a maximum radial field of 0.94 T inside the plasma chamber. The coupling of the microwave to the plasma shows efficient ECR plasma heating at microwave power levels around 10 watts. Charge state distributions for various elements with intensities up to 320 e/spl mu/A and their dependence on operation parameters will be presented as well as VUV spectra in the wavelength region down to 15 nm.

10.1109/pac.1997.752738

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Atom beam treatment of diamond films

Diamond and Related Materials (1995)

M.G. Jubber M. Liehr Johanne McGrath J.I.B. Wilson I.C. Drummond

Cathodoluminescence

10.1016/0925-9635(94)05233-6

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Citations (11)

Optimization of a neutron image plate detector with low γ-sensitivity

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (2004)

S. Masalovich A. Ioffe M. Schlapp Heinz von Seggern E. Küssel

Neutron Imaging

Neutron Detection

Neutron capture

SIGNAL (programming language)

10.1016/j.nima.2004.10.002

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Citations (13)

Preparation and optimization of ceramic neutron image plates based on BaFBr : Eu²⁺and GdF₃

Journal of Physics D Applied Physics (2005)

Robert Kolb J. Zimmermann M. Schlapp S. Hesse Heinz von Seggern

Commercially available neutron image plates (NIPs) consist of a mixture of a powdered x-ray storage phosphor and a neutron converter, both embedded in an organic binder supported on a polymer sheet. The initiation of the storage mechanism in the phosphor is caused by conversion electrons generated in the neutron converter due to neutron absorption and activation and its subsequent decay. The organic binder phase just provides mechanical stability to the NIP but reduces its efficiency through two effects: first by the absorption of low energy electrons and second by introducing an inactive volume fraction to the layer. Avoiding the organic fraction, for example by preparing a ceramic NIP without binder, could increase the efficiency and spatial resolution without a loss in mechanical stability. In the following, two processes for preparation of ceramic NIPs are reported, both delivering ceramic NIPs consisting solely of GdF3, as the neutron converter and BaFBr : Eu2+, as the storage phosphor. The correlation between the sintering parameters and volume fraction of the neutron converter is investigated with respect to high efficiency and high spatial resolution. The generally observed antidromic behaviour between these two quantities was observed in this study also.

Neutron Imaging

Europium

10.1088/0022-3727/38/18/027

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Citations (2)