On the Cross Section of Heavy Nuclei for Slow Neutrons

1935 ◽  
Vol 48 (4) ◽  
pp. 367-372 ◽  
Author(s):  
J. H. van Vleck
Keyword(s):  
Cross Section ◽  
Heavy Nuclei ◽  
The Cross ◽  
Slow Neutrons

Isotopic dependence of the cross section for the induced fission of heavy nuclei

2009 ◽  
Vol 72 (6) ◽  
pp. 928-937 ◽  
Author(s):  
O. N. Bolgova ◽  
G. G. Adamian ◽  
N. V. Antonenko ◽  
A. S. Zubov ◽  
S. P. Ivanova ◽  
...  
Keyword(s):  
Cross Section ◽  
Heavy Nuclei ◽  
Induced Fission ◽  
The Cross ◽  
Isotopic Dependence

The cross section for fission of Np237 by slow neutrons

1970 ◽  
Vol 28 (4) ◽  
pp. 464-467 ◽  
Author(s):  
K. A. Gavrilov ◽  
K. K. Koshaeva ◽  
S. N. Kraitor ◽  
L. B. Pikel'ner
Keyword(s):  
Cross Section ◽  
The Cross ◽  
Slow Neutrons

THERMONUCLEAR REACTIONS IN MEDIUM AND HEAVY NUCLEI

1966 ◽  
Vol 44 (1) ◽  
pp. 151-174 ◽  
Author(s):  
J. W. Truran ◽  
C. J. Hansen ◽  
A. G. W. Cameron ◽  
A. Gilbert
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Level Density ◽  
Strength Function ◽  
Mass Range ◽  
Reaction Rates ◽  
Nuclear Radiation ◽  
Heavy Nuclei ◽  
Nuclear Level Density ◽  
The Cross

A method is outlined by which thermonuclear reaction rates can be determined from the statistical properties of nuclei. Assuming that the contribution to the cross section of a given resonance is given by the Breit–Wigner single-level formula, the total rate is determined by integrating the product of the cross section, weighted by the nuclear level density, and the velocity over energy. The nuclear radiation widths were calculated on the assumption that electric-dipole transitions are dominant. The particle widths were determined by approximating the nuclear strength function by that value calculated for a black nucleus. Nuclear cross sections calculated in this manner are compared with experiment both for charged-particle reactions on lighter nuclei and for neutron-capture reactions proceeding on nuclei in the mass range A > 60. Good agreement is obtained in both cases.

A New Approach to the Demonstration of Oxidase-Localization Using Tannic Acid Or Catechin

1973 ◽  
Vol 31 ◽  
pp. 698-699
Author(s):  
V. Mizuhira ◽  
Y. Futaesaku
Keyword(s):  
Cross Section ◽  
Tannic Acid ◽  
Elastic Fiber ◽  
The Other ◽  
New Approach ◽  
Tissue Block ◽  
Active Reaction ◽  
The Cross

Previously we reported that tannic acid is a very effective fixative for proteins including polypeptides. Especially, in the cross section of microtubules, thirteen submits in A-tubule and eleven in B-tubule could be observed very clearly. An elastic fiber could be demonstrated very clearly, as an electron opaque, homogeneous fiber. However, tannic acid did not penetrate into the deep portion of the tissue-block. So we tried Catechin. This shows almost the same chemical natures as that of proteins, as tannic acid. Moreover, we thought that catechin should have two active-reaction sites, one is phenol,and the other is catechole. Catechole site should react with osmium, to make Os- black. Phenol-site should react with peroxidase existing perhydroxide.

Energy Distribution in Electron Beams

1972 ◽  
Vol 30 ◽  
pp. 568-569
Author(s):  
Tamotsu Ohno
Keyword(s):  
Electron Beam ◽  
Energy Distribution ◽  
Cross Section ◽  
Integral Curve ◽  
Electron Beams ◽  
Electron Gun ◽  
Angular Divergence ◽  
Apparent Increase ◽  
Integral Width ◽  
The Cross

The energy distribution in an electron; beam from an electron gun provided with a biased Wehnelt cylinder was measured by a retarding potential analyser. All the measurements were carried out with a beam of small angular divergence (<3xl0-4 rad) to eliminate the apparent increase of energy width as pointed out by Ichinokawa.The cross section of the beam from a gun with a tungsten hairpin cathode varies as shown in Fig.1a with the bias voltage Vg. The central part of the beam was analysed. An example of the integral curve as well as the energy spectrum is shown in Fig.2. The integral width of the spectrum ΔEi varies with Vg as shown in Fig.1b The width ΔEi is smaller than the Maxwellian width near the cut-off. As |Vg| is decreased, ΔEi increases beyond the Maxwellian width, reaches a maximum and then decreases. Note that the cross section of the beam enlarges with decreasing |Vg|.

Research in the cross-section of community psychology and global climate change: A call for action

2009 ◽  
Author(s):  
Marci Culley ◽  
Holly Angelique ◽  
Courte Voorhees ◽  
Brian John Bishop ◽  
Peta Louise Dzidic ◽  
...  
Keyword(s):  
Climate Change ◽  
Cross Section ◽  
Global Climate Change ◽  
Community Psychology ◽  
Global Climate ◽  
The Cross

Experimental Studies Of Multilayer Glass Structures On Compression, Compression With Bending And Simple Bending

2019 ◽  
pp. 22-30
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Applied Load ◽  
Experimental Studies ◽  
Strength Properties ◽  
Research Topic ◽  
Normative Values ◽  
Laminated Glass ◽  
The Cross ◽  
Experimental Values

The work of multilayer glass structures for central and eccentric compression and bending are considered. The substantiation of the chosen research topic is made. The description and features of laminated glass for the structures investigated, their characteristics are presented. The analysis of the results obtained when testing for compression, compression with bending, simple bending of models of columns, beams, samples of laminated glass was made. Overview of the types and nature of destruction of the models are presented, diagrams of material operation are constructed, average values of the resistance of the cross-sections of samples are obtained, the table of destructive loads is generated. The need for development of a set of rules and guidelines for the design of glass structures, including laminated glass, for bearing elements, as well as standards for testing, rules for assessing the strength, stiffness, crack resistance and methods for determining the strength of control samples is emphasized. It is established that the strength properties of glass depend on the type of applied load and vary widely, and significantly lower than the corresponding normative values of the strength of heat-strengthened glass. The effect of the connecting polymeric material and manufacturing technology of laminated glass on the strength of the structure is also shown. The experimental values of the elastic modulus are different in different directions of the cross section and in the direction perpendicular to the glass layers are two times less than along the glass layers.

Seasonality in the Cross-Section of Stock Returns

CFA Digest ◽  
2008 ◽  
Vol 38 (3) ◽  
pp. 55-56
Author(s):  
Kathryn Dixon Jost
Keyword(s):  
Stock Returns ◽  
Cross Section ◽  
The Cross

As Told by the Supplier: Trade Credit and the Cross Section of Stock Returns

CFA Digest ◽  
2016 ◽  
Vol 46 (3) ◽  
Author(s):  
Imrith Ramtohul
Keyword(s):  
Stock Returns ◽  
Cross Section ◽  
Trade Credit ◽  
The Cross

Book-to-Market and the Cross-Section of Expected Returns in International Stock Markets

CFA Digest ◽  
2013 ◽  
Vol 43 (3) ◽  
Author(s):  
Thomas M. Arnold
Keyword(s):  
Cross Section ◽  
Stock Markets ◽  
Expected Returns ◽  
International Stock Markets ◽  
The Cross
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