Accurate determination of lithium, boron, fluorine and sodium in some matrices using low energy alpha-particles induced gamma-rays

1980 ◽  
Vol 56 (1-2) ◽  
pp. 185-198 ◽  
Author(s):  
B. Borderie ◽  
M. Basutcu ◽  
J. N. Barrandon ◽  
J. L. Pinault
Keyword(s):  
Gamma Rays ◽  
Accurate Determination ◽  
Alpha Particles ◽  
Low Energy

Determination of the Ranges and Straggling of Low-Energy Alpha Particles in a Cloud Chamber

1954 ◽  
Vol 96 (3) ◽  
pp. 673-678 ◽  
Author(s):  
S. Barile ◽  
R. Webeler ◽  
G. Allen
Keyword(s):  
Alpha Particles ◽  
Cloud Chamber ◽  
Low Energy

scholarly journals Detection of Alpha Particles and Low Energy Gamma Rays by Thermo-Bonded Micromegas in Xenon Gas

2013 ◽  
Vol 60 (4) ◽  
pp. 3008-3013 ◽  
Author(s):  
Yuehuan Wei ◽  
Liang Guan ◽  
Zhiyong Zhang ◽  
Qing Lin ◽  
Xiaolian Wang ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Alpha Particles ◽  
Low Energy ◽  
Energy Gamma

Low-energy vibrational spectra of flexible diphenyl molecules: biphenyl, diphenylmethane, bibenzyl and 2-, 3- and 4-phenyltoluene

2014 ◽  
Vol 16 (40) ◽  
pp. 22062-22072 ◽  
Author(s):  
M. A. Martin-Drumel ◽  
O. Pirali ◽  
C. Falvo ◽  
P. Parneix ◽  
A. Gamboa ◽  
...  
Keyword(s):  
Gas Phase ◽  
Vibrational Spectra ◽  
Accurate Determination ◽  
Low Frequency ◽  
Low Energy ◽  
Vibrational Modes ◽  
Phase Spectra

Gas phase spectra of six bi-phenyl molecules are reported allowing an accurate determination of their active low-frequency vibrational modes.

On determination of Th concentration in specimens by means of gamma rays and alpha particles

1995 ◽  
Vol 24 (1) ◽  
pp. 83-86 ◽  
Author(s):  
O Otgonsuren ◽  
L Enchjin ◽  
C.H Gerbish ◽  
V.P Perelygin ◽  
R.I Petrova
Keyword(s):  
Gamma Rays ◽  
Alpha Particles

scholarly journals SENSITIVITY ANALYSIS TO EVALUATE THE TRANSPORT PROPERTIES OF CdZnTe DETECTORS USING ALPHA PARTICLES AND LOW-ENERGY GAMMA-RAYS

2011 ◽  
Vol 43 (6) ◽  
pp. 567-572
Author(s):  
Kyung-O Kim ◽  
Woo-Sang Ahn ◽  
Tae-Je Kwon ◽  
Soon-Young Kim ◽  
Jong-Kyung Kim ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Transport Properties ◽  
Gamma Rays ◽  
Alpha Particles ◽  
Low Energy ◽  
Energy Gamma ◽  
Cdznte Detectors

scholarly journals A determination of the absolute velocity of the alpha-particles from radium C'

1936 ◽  
Vol 157 (890) ◽  
pp. 183-194 ◽  
Keyword(s):  
Accurate Determination ◽  
Maximum Error ◽  
Atomic Weight ◽  
Alpha Particles ◽  
Absolute Velocity ◽  
Group V ◽  
A Value ◽  
Radioactive Substances ◽  
Α Particles

The first accurate determination of the velocity of expulsion of the α-particles from radioactive substances was made by Rutherford and Robinson, who, by measuring magnetic and electric deflexions, found for the α-particles from radium C' Hρ = 3∙983 × 10 5 E. M. U. and V = 1∙922 × 10 9 cm./sec., the accuracy being 1 in 400. In 1926 the writer measured Hρ for the same group of α-particles and found the value 3∙993 × 10 5 E. M. U. to 1 in 1000. This result, together with the value of the faraday and Aston’s determination of the atomic weight of helium, gave V = 1∙922 × 10 9 cm./sec. Absolute velocity determinations have been made for polonium by I. Curie, and for several groups by Rosenblum and Dupouy, who found for the radium C' group V = 1∙9218 × 10 9 cm./sec. with an accuracy greater than 1 in 1000. The velocities of over fifty α-particle groups have now been measured relative to the main radium C' group; these measurements have been summarized in a paper by Lewis and Bowden. The present paper describes a new determination of Hρ for this group. Using for E/M for the aparticle a value calculated from the faraday and the atomic weight of helium the velocity and energy have been calculated. The maximum error in Hρ is estimated to be of the order of 1 in 10 4 .

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

Fast calibration of CBED patterns for quantitative analysis

1993 ◽  
Vol 51 ◽  
pp. 674-675
Author(s):  
M.A. Gribelyuk ◽  
M. Rühle
Keyword(s):  
Reciprocal Lattice ◽  
Accurate Determination ◽  
Incident Beam ◽  
Crystal Thickness ◽  
Structure Model ◽  
Beam Direction ◽  
Transmitted Beam ◽  
Reciprocal Vector ◽  
On Line

A new method is suggested for the accurate determination of the incident beam direction K, crystal thickness t and the coordinates of the basic reciprocal lattice vectors V1 and V2 (Fig. 1) of the ZOLZ plans in pixels of the digitized 2-D CBED pattern. For a given structure model and some estimated values Vest and Kest of some point O in the CBED pattern a set of line scans AkBk is chosen so that all the scans are located within CBED disks.The points on line scans AkBk are conjugate to those on A0B0 since they are shifted by the reciprocal vector gk with respect to each other. As many conjugate scans are considered as CBED disks fall into the energy filtered region of the experimental pattern. Electron intensities of the transmitted beam I0 and diffracted beams Igk for all points on conjugate scans are found as a function of crystal thickness t on the basis of the full dynamical calculation.

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