Efficiency corrections for variable sample height in well-type germanium gamma detectors

2004 ◽  
Vol 225 (3) ◽  
pp. 423-433 ◽  
Author(s):  
P.G. Appleby ◽  
G.T. Piliposian
Keyword(s):  
Sample Height ◽  
Gamma Detectors

Rocking Beam Microarea Diffraction Applied to Metallic thin Films

1976 ◽  
Vol 34 ◽  
pp. 396-397
Author(s):  
R. H. Geiss
Keyword(s):  
Thin Films ◽  
Electron Diffraction ◽  
Small Area ◽  
Objective Lens ◽  
Electron Optics ◽  
Metallic Thin Films ◽  
Transmission Electron Diffraction ◽  
Transmission Electron ◽  
Sample Height ◽  
Scanning Transmission

The theory and practical limitations of micro area scanning transmission electron diffraction (MASTED) will be presented. It has been demonstrated that MASTED patterns of metallic thin films from areas as small as 30 Åin diameter may be obtained with the standard STEM unit available for the Philips 301 TEM. The key to the successful application of MASTED to very small area diffraction is the proper use of the electron optics of the STEM unit. First the objective lens current must be adjusted such that the image of the C2 aperture is quasi-stationary under the action of the rocking beam (obtained with 40-80-160 SEM settings of the P301). Second, the sample must be elevated to coincide with the C2 aperture image and its image also be quasi-stationary. This sample height adjustment must be entirely mechanical after the objective lens current has been fixed in the first step.

An evaluation of ECT sample height for small flute board grades and Box Manufacturer’s Certification compliance

TAPPI Journal ◽  
2009 ◽  
Vol 8 (6) ◽  
pp. 24-28
Author(s):  
CORY JAY WILSON ◽  
BENJAMIN FRANK
Keyword(s):  
Compressive Strength ◽  
Compressive Load ◽  
Test Sample ◽  
Test Methods ◽  
Test Method ◽  
Initial Development ◽  
Sample Height ◽  
Relationship Of ◽  
The Relationship ◽  
Corrugated Fiberboard

TAPPI test T811 is the specified method to ascertain ECT relative to box manufacturer’s certification compliance of corrugated fiberboard under Rule 41/ Alternate Item 222. T811 test sample heights were derived from typical board constructions at the time of the test method’s initial development. New, smaller flute sizes have since been developed, and the use of lighter weight boards has become more common. The T811 test method includes sample specifications for typical A-flute, B-flute, and C-flute singlewall (and doublewall and triplewall) structures, but not for newer thinner E-flute or F-flute structures. This research explores the relationship of ECT sample height to measured compressive load, in an effort to determine valid E-flute and F-flute ECT sample heights for use with the T811 method. Through this process, it identifies challenges present in our use of current ECT test methods as a measure of intrinsic compressive strength for smaller flute structures. The data does not support the use of TAPPI T 811 for ECT measurement for E and F flute structures, and demonstrates inconsistencies with current height specifi-cations for some lightweight B flute.

Background reductions obtained with gamma detectors by use of massive cosmic-ray shielding

1972 ◽  
Vol 100 (2) ◽  
pp. 333-348 ◽  
Author(s):  
J.H. Kaye ◽  
F.P. Brauer ◽  
R.E. Connally ◽  
H.G. Rieck
Keyword(s):  
Cosmic Ray ◽  
Gamma Detectors

scholarly journals Soil Water Retention Curve as Affected by Sample Height

2018 ◽  
Vol 42 (0) ◽  
Author(s):  
Maria Laiane do Nascimento Silva ◽  
Paulo Leonel Libardi ◽  
Fernando Henrique Setti Gimenes
Keyword(s):  
Soil Water ◽  
Water Retention ◽  
Water Retention Curve ◽  
Soil Water Retention Curve ◽  
Soil Water Retention ◽  
Retention Curve ◽  
Sample Height

Using low resolution gamma detectors to detect and differentiate 239Pu and 235U fissions

2009 ◽  
Vol 282 (3) ◽  
pp. 901-904 ◽  
Author(s):  
E. Swanberg ◽  
E. B. Norman ◽  
H. Shugart ◽  
S. G. Prussin ◽  
E. Browne
Keyword(s):  
Low Resolution ◽  
Gamma Detectors

scholarly journals Development of intelligent preamplifier for semiconductor detectors

2021 ◽  
pp. 8-8
Author(s):  
Vladimir Kondratjev ◽  
Vasily Litvinsky ◽  
Serhii Pohuliai ◽  
Stanislavs Lozkins
Keyword(s):  
Liquid Nitrogen ◽  
High Speed ◽  
Temperature Sensors ◽  
Low Noise ◽  
Nitrogen Level ◽  
Semiconductor Detectors ◽  
Resistive Feedback ◽  
Charge Sensitive Preamplifier ◽  
Gamma Detectors

The results of engineering an intelligent preamplifier for HPGe gamma-detectors are presented. An intelligent preamplifier is a low-noise, high-speed resistive feedback charge-sensitive preamplifier with a built-in microcontroller and additional units that enable control of preamplifier and detector parameters. It also allows to manage performance of the internal testing pulser, sensor of liquid nitrogen level in Dewar, humidity, pressure and temperature sensors in a sealed preamplifier section. Intelligent preamplifier operation, setup and parameter measurements are controlled by a software.

Effects of Surface Processing on the Response of CZT Gamma Detectors: Studies with a Collimated Synchrotron X-Ray Beam

2008 ◽  
Vol 37 (9) ◽  
pp. 1356-1361 ◽  
Author(s):  
A. Hossain ◽  
A.E. Bolotnikov ◽  
G.S. Camarda ◽  
Y. Cui ◽  
S. Babalola ◽  
...  
Keyword(s):  
Surface Processing ◽  
X Ray ◽  
Gamma Detectors
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