scholarly journals MEASUREMENTS OF THE PROPERTIES OF BERYLLIUM FOIL

2000 ◽  
Author(s):  
Y. ZHAO ◽  
H. WANG
Keyword(s):  
Beryllium Foil

A New Hafnium-Beryllium System Prioduced by Ion Implantation and Annealing Techniques

1983 ◽  
Vol 27 ◽  
Author(s):  
J.C. Soares ◽  
A.A. Melo ◽  
M.F. DA Silva ◽  
E.J. Alves ◽  
K. Freitag ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Single Crystals ◽  
Room Temperature ◽  
Low Dose ◽  
Correlation Method ◽  
High Dose ◽  
Tetrahedral Sites ◽  
Time Differential ◽  
Before And After ◽  
Beryllium Foil

ABSTRACTLow and high dose hafnium imolanted beryllium samoles have been prepared at room temperature by ion implantation of beryllium commercial foils and single crystals. These samples have been studied before and after annealing with the time differential perturbed angular correlation method (TDPAC) and with Rutherford backscattering and channeling techniques. A new metastable system has been discovered in TDPAC-measurements in a low dose hafnium implanted beryllium foil annealed at 500°C. Channeling measurements show that the hafnium atoms after annealing, are in the regular tetrahedral sites but dislocated from the previous position occupied after implantation. The formation of this system is connected with the redistribution of oxygen in a thin layer under the surface. This effect does not take place precisely at the same temperature in foils and in single crystals.

Beryllium foil transition‐radiation source for x‐ray lithography

1991 ◽  
Vol 59 (2) ◽  
pp. 189-191 ◽  
Author(s):  
M. A. Piestrup ◽  
D. G. Boyers ◽  
C. I. Pincus ◽  
J. L. Harris ◽  
H. S. Caplan ◽  
...  
Keyword(s):  
Radiation Source ◽  
Transition Radiation ◽  
X Ray ◽  
Beryllium Foil

scholarly journals Optimization of soft X-ray tomography on the COMPASS tokamak

Nukleonika ◽  
2016 ◽  
Vol 61 (4) ◽  
pp. 403-408 ◽  
Author(s):  
Martin Imríšek ◽  
Jan Mlynář ◽  
Viktor Löffelmann ◽  
Vladimír Weinzettl ◽  
Tomáš Odstrčil ◽  
...  
Keyword(s):  
Cross Section ◽  
Diagnostic System ◽  
Numerical Differentiation ◽  
Pinhole Camera ◽  
Silicon Photodiode ◽  
Robust Solution ◽  
X Ray ◽  
Photodiode Arrays ◽  
Tomographic Inversions ◽  
Beryllium Foil

Abstract The COMPASS tokamak is equipped with the soft X-ray (SXR) diagnostic system based on silicon photodiode arrays shielded by a thin beryllium foil. The diagnostic is composed of two pinhole cameras having 35 channels each and one vertical pinhole camera with 20 channels, which was installed recently to improve tomographic inversions. Lines of sight of the SXR detectors cover almost complete poloidal cross section of the COMPASS vessel with a spatial resolution of 1-2 cm and temporal resolution of about 3 μs. Local emissivity is reconstructed via Tikhonov regularization constrained by minimum Fisher information that provides reliable and robust solution despite limited number of projections and ill-conditionality of this task. Improved border conditions and numerical differentiation matrices suppressing artifacts in reconstructed radiation were implemented in the code. Furthermore, a fast algorithm eliminating iterative processes was developed, and it is foreseen to be tested in real-time plasma control.

The Preparation of Beryllium Foil

1949 ◽  
Vol 26 (11) ◽  
pp. 378-379 ◽  
Author(s):  
H Smith
Keyword(s):  
Beryllium Foil

Beryllium Foil Monitor for External Proton Beam

1962 ◽  
Vol 33 (5) ◽  
pp. 565-566 ◽  
Author(s):  
Clifford E. Swartz ◽  
Paul Feldman
Keyword(s):  
Proton Beam ◽  
Beryllium Foil

The effect of annealing on the mechanical properties and the structure of beryllium foil

1991 ◽  
Vol 33 (1) ◽  
pp. 12-14 ◽  
Author(s):  
V. P. Krivko ◽  
P. M. Romanko ◽  
L. I. Kolesnik ◽  
N. V. Nagnibeda ◽  
Yu. I. Kokovikhin
Keyword(s):  
Mechanical Properties ◽  
Beryllium Foil

scholarly journals Research into EDM of Beryllium Foil

2019 ◽  
Vol 592 ◽  
pp. 012080
Author(s):  
You Wu ◽  
Xuefeng Xiong ◽  
Wenjie Pan
Keyword(s):  
Beryllium Foil

Vibration of Beryllium Foil Window Caused by Plasma Particle Bombardment in Plasma Focus X-Ray Source

1991 ◽  
Vol 30 (Part 1, No. 2) ◽  
pp. 385-391 ◽  
Author(s):  
Toshihiko Sato ◽  
Isao Ochiai ◽  
Yasuo Kato ◽  
Seiichi Murayama
Keyword(s):  
Plasma Focus ◽  
Particle Bombardment ◽  
Plasma Particle ◽  
X Ray ◽  
Beryllium Foil

Characterization of beryllium foil produced by hot rolling

1992 ◽  
Vol 27 (10) ◽  
pp. 2653-2659 ◽  
Author(s):  
J. Wittenauer ◽  
T. G. Nieh ◽  
G. Waychunas
Keyword(s):  
Hot Rolling ◽  
Beryllium Foil
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