THE PHOTODISINTEGRATION OF MANGANESE AND RHODIUM

1959 ◽  
Vol 37 (12) ◽  
pp. 1344-1348 ◽  
Author(s):  
R. W. Parsons
Keyword(s):  
Quadrupole Moment ◽  
Cross Section ◽  
Giant Resonance ◽  
Resonance Curve ◽  
X Ray ◽  
Intrinsic Quadrupole Moment ◽  
The Cross ◽  
Two Peaks

The cross section for the production of photoneutrons from Mn55 and Rh103 has been found by irradiating these elements in the X-ray beam of a 24-Mev betatron. For Mn55, the giant resonance shows two distinct peaks and the intrinsic quadrupole moment is estimated to be 0.73 ± 0.14 barn; for Rh103, two peaks cannot be resolved, but the shape of the giant resonance curve is consistent with an intrinsic quadrupole moment of approximately 2.1 barns.

THE GAMMA-NEUTRON CROSS SECTION FOR F19

1960 ◽  
Vol 38 (8) ◽  
pp. 1069-1076 ◽  
Author(s):  
J. D. King ◽  
R. N. H. Haslam ◽  
W. J. McDonald
Keyword(s):  
Quadrupole Moment ◽  
Cross Section ◽  
Giant Resonance ◽  
Neutron Cross Section ◽  
Annihilation Radiation ◽  
Small Disturbance ◽  
X Ray ◽  
The Core ◽  
Intrinsic Quadrupole Moment ◽  
The Cross

The F19(γ,n)F18 reaction has been studied by irradiating teflon samples in the X-ray beam of a 25-Mev betatron and detecting the annihilation radiation emitted during the decay of the residual nuclei. The cross section shows maxima at 10.6 (very small), 12.4, 14.0, 16.1, 17.2, and 19.3 Mev. The peak at 12.4 Mev is possibly due to excitation of the last neutron in F19 with only a small disturbance of the core nucleons. The peaks at 14.0 and 19.1 Mev are interpreted as the components of a split giant resonance, indicating an intrinsic quadrupole moment, Q0, of approximately 0.30 × 10−21 cm2 for F19.

THE PHOTODISINTEGRATION OF TANTALUM

1959 ◽  
Vol 37 (7) ◽  
pp. 809-814 ◽  
Author(s):  
R. W. Parsons ◽  
L. Katz
Keyword(s):  
Quadrupole Moment ◽  
Cross Section ◽  
Electric Quadrupole ◽  
Electric Quadrupole Moment ◽  
X Ray ◽  
The Cross

The cross section for the absorption of photons by Ta181 has been deduced from measurements of the neutrons emitted when tantalum is irradiated in the X-ray beam of a 22-Mev betatron. The cross section has well-defined peaks at 12.75 ±.25 and 15.25 ±.25 Mev, and from this the intrinsic electric quadrupole moment is deduced to be 5.7 ± 1.3 barns.

On the Cross-Section Structure of the Mitochondrial Cristae-Membrane as Revealed by X-Ray Diffraction

1976 ◽  
Vol 31 (9-10) ◽  
pp. 612-621 ◽  
Author(s):  
W Müller-Klieser ◽  
W Kreutz
Keyword(s):  
Cross Section ◽  
Function Evaluation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Section Profile ◽  
The Cross ◽  
Diffraction Patterns ◽  
Cross Section Profile ◽  
Section Structure ◽  
Q Function

Abstract Mitochondria were isolated using sorbitol and high buffer concentration in the medium. X-ray diffraction patterns arising from the mitochondrial cristae-membrane were recorded in the fully dried state and in two different states in humidity. The Q-function evaluation of these X-ray dif­fraction diagrams resulted in electron density cross-section profiles, which consist of two main peaks of opposite sign and one, respectively two, smaller peaks. The total thickness of the membrane amounts to 120 Å in the dry and 140 Å to 160 Å in the wet state.An interpretation of the cross-section profile is tentatively proposed.

Study on the Porosity in Al-Zn-Mg-Cu High Strength Alloy DC Ingot

2016 ◽  
Vol 879 ◽  
pp. 790-794 ◽  
Author(s):  
Hui Xue Jiang ◽  
Hiromi Nagaumi ◽  
Shi Jie Guo ◽  
Chun Zou
Keyword(s):  
Cooling Rate ◽  
Cross Section ◽  
High Strength ◽  
Direct Chill ◽  
Thickness Direction ◽  
X Ray ◽  
Density Method ◽  
Width Direction ◽  
Strength Alloy ◽  
The Cross

An Al-Zn-Mg-Cu high strength alloy ingot produced by Direct-Chill casting was used in this study. The distribution of porosity in the cross section of the DC ingot was investigated by the precision density method (Archimeds’ principle), also X-ray microtomography technique was used to quantitatively analyze porosities in typical positions. The pattern in the cross section as well as in the thickness and width direction was obtained. The results show that: in the cross section of the ingot, porosity was increasing gradually from the surface to the center of the ingot; porosity shows an overall escalating trend from the surface to the center of the ingot both in thickness direction and in width direction; porosity was closely related to the cooling rate in the ingot; oxide inclusions have an effect on the formation of porosity to some extent.

scholarly journals Microbeam X-ray Diffraction from the Cross-section of Metallic Materials with Inhomogeneous Structure

1991 ◽  
Vol 77 (11) ◽  
pp. 2052-2059 ◽  
Author(s):  
Tizuko MAEDA ◽  
Keiichi MARUTA ◽  
Osamu FURUKIMI ◽  
Nobuyuki MORITO
Keyword(s):  
Cross Section ◽  
Inhomogeneous Structure ◽  
Metallic Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
The Cross

An Algorithm for the Description of White and Characteristic Tube Spectra (11 ≤ Z ≤ 83, 10keV ≤ Eo ≤ 50keV)

1991 ◽  
Vol 35 (B) ◽  
pp. 721-726 ◽  
Author(s):  
H. Ebel ◽  
H. Wiederschwinger ◽  
J. Wernisch ◽  
P.A. Pella
Keyword(s):  
Kinetic Energy ◽  
Cross Section ◽  
Atomic Number ◽  
Solid Angle ◽  
Electron Interaction ◽  
X Rays ◽  
X Ray ◽  
The Cross ◽  
Spectral Responses ◽  
The Continuum

Kramers described the cross section of electron interaction with target atoms of atomic number Z bywhere Eo is the kinetic energy of impinging electrons, and E o S) the energy of x-ray photons of the continuum, Smith et al modified this equation, introducing an exponent x, so thatWe applied the cross-section σS, E to the evaluation of experimental results. The evaluation of the measured spectral responses of the x-ray signals nE was performed bywhere f(deff) describes the absorption of x-rays of energy E in the target, RE accounts for backscattering of electrons, DE quantifies the efficiency of x-ray detection within the solid angle Ω.

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