Nuclear form factor sensitivity in the reactionHe3(π−, π0)H3

1980 ◽  
Vol 22 (3) ◽  
pp. 1197-1201 ◽  
Author(s):  
W. J. Gerace ◽  
J. P. Mestre ◽  
J. F. Walker ◽  
D. A. Sparrow
Keyword(s):  
Form Factor ◽  
Nuclear Form Factor

The influence of the nuclear and atomic form factors on the muon bremsstrahlung cross section

1968 ◽  
Vol 46 (10) ◽  
pp. S377-S380 ◽  
Author(s):  
A. A. Petrukhin ◽  
V. V. Shestakov
Keyword(s):  
Form Factor ◽  
Cross Section ◽  
Born Approximation ◽  
Form Factors ◽  
Experimental Results ◽  
Simple Analytical Expression ◽  
Nuclear Form Factor ◽  
The Cross ◽  
Atomic Electrons ◽  
Bremsstrahlung Process

The cross section for the muon bremsstrahlung process is calculated as a function of the nuclear form factor in the Born approximation following the Bethe and Heitler theory. The influence of the nuclear form factor is greater than that taken by Christy and Kusaka. The simple analytical expression for the effect of the screening of the atomic electrons is found. The influence of a decrease in the cross section upon the interpretation of some experimental results is estimated.

Hematological characterization of goldfish, Carassius auratus L., by image analysis: effects of thermal acclimation and heat shock

1991 ◽  
Vol 69 (8) ◽  
pp. 2041-2047 ◽  
Author(s):  
A. H. Houston ◽  
A. Murad
Keyword(s):  
Image Analysis ◽  
Form Factor ◽  
Heat Shock ◽  
Cell Population ◽  
Carassius Auratus ◽  
Morphological Characteristics ◽  
Nuclear Form Factor ◽  
Goldfish Carassius Auratus ◽  
Stage Of Development ◽  
Temperature Regimes

The morphological characteristics of erythrocyte populations from goldfish, Carassius auratus L., acclimated to constant (15, 25, or 35 °C) and diurnally cycling (25 ± 10 °C) temperature regimes or exposed to abrupt heat shock (15–25 °C, 25–35 °C) were examined by image analysis in an attempt to develop criteria for assessing the stage of development and red cell population age structure. Of the indices considered, nuclear form factor (4π area/perimeter2) appeared to best define the immature state. Estimates of juvenile cell abundances based on nuclear form factor ranged from 23.2 to 56.5% of the cell population and were generally consistent with the thermal histories of the test groups examined. Erythrocyte population characterization is recommended for inclusion in future studies on hematological features of response to altered environmental conditions.

scholarly journals Microscopic nuclear form factor for the pygmy dipole resonance

2016 ◽  
Vol 117 ◽  
pp. 06017
Author(s):  
E.G. Lanza ◽  
A. Vitturi ◽  
M.V. Andrés ◽  
F. Catara
Keyword(s):  
Form Factor ◽  
Nuclear Form Factor ◽  
Dipole Resonance ◽  
Pygmy Dipole Resonance

The effect of temperature on high-resolution TEM image contrast

1995 ◽  
Vol 53 ◽  
pp. 640-641
Author(s):  
T. Geipel ◽  
W. Mader ◽  
P. Pirouz
Keyword(s):  
Form Factor ◽  
Inelastic Scattering ◽  
Accurate Method ◽  
Waller Factor ◽  
Effect Of Temperature ◽  
Specimen Thickness ◽  
Influence Of Temperature ◽  
Debye Waller Factor ◽  
Influence Of Temperature On ◽  
Atomic Form Factor

Temperature affects both elastic and inelastic scattering of electrons in a crystal. The Debye-Waller factor, B, describes the influence of temperature on the elastic scattering of electrons, whereas the imaginary part of the (complex) atomic form factor, fc = fr + ifi, describes the influence of temperature on the inelastic scattering of electrons (i.e. absorption). In HRTEM simulations, two possible ways to include absorption are: (i) an approximate method in which absorption is described by a phenomenological constant, μ, i.e. fi; - μfr, with the real part of the atomic form factor, fr, obtained from Hartree-Fock calculations, (ii) a more accurate method in which the absorptive components, fi of the atomic form factor are explicitly calculated. In this contribution, the inclusion of both the Debye-Waller factor and absorption on HRTEM images of a (Oll)-oriented GaAs crystal are presented (using the EMS software.Fig. 1 shows the the amplitudes and phases of the dominant 111 beams as a function of the specimen thickness, t, for the cases when μ = 0 (i.e. no absorption, solid line) and μ = 0.1 (with absorption, dashed line).

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