Hole-state density ofLa1−xSrxCoO3−δ(0<~x<~0.5)across the insulator/metal phase boundary

2000 ◽  
Vol 61 (8) ◽  
pp. 5666-5671 ◽  
Author(s):  
A. R. Moodenbaugh ◽  
B. Nielsen ◽  
Sharadha Sambasivan ◽  
D. A. Fischer ◽  
T. Friessnegg ◽  
...  
Keyword(s):  
Phase Boundary ◽  
State Density ◽  
Metal Phase ◽  
Hole State

scholarly journals The pre-equilibrium and equilibrium double differential cross sections for the nucleons and light nuclei induce nuclear reactions on 27Al nuclei

2019 ◽  
Vol 15 (32) ◽  
pp. 77-91
Author(s):  
Maha Taha Idrees
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Nuclear Reactions ◽  
State Density ◽  
Light Nuclei ◽  
Hole State ◽  
Differential Cross Sections ◽  
Mass System ◽  
Shell Effects ◽  
27Al Target

The pre - equilibrium and equilibrium double differential crosssections are calculated at different energies using Kalbach Systematicapproach in terms of Exciton model with Feshbach, Kerman andKoonin (FKK) statistical theory. The angular distribution of nucleonsand light nuclei on 27Al target nuclei, at emission energy in the centerof mass system, are considered, using the Multistep Compound(MSC) and Multistep Direct (MSD) reactions. The two-componentexciton model with different corrections have been implemented incalculating the particle-hole state density towards calculating thetransition rates of the possible reactions and follow up the calculationthe differential cross-sections, that include MSC and MSD models.The finite well depth, isospin, shell effects, Pauli effect, chargeeffect, pairing, surface, angular and linear momentum distributionscorrections are considered in this work. The nucleons (n and p) andlight nuclei (2D and 3T) have been employed as projectiles at thetarget 27Al nuclei and at different incident energies (4MeV, 14 MeVand 14.8MeV). The results have been compared with the availableexperimental and theoretical published work. The comparisons showan acceptable agreement with the TALAYS code (Tendel 2014) forthe reactions: 27Al (n, n) 27Al, 27Al (p, n) 63Zn, 27Al (p, D) 62Cu, 27Al(p, p) 63Cu and 27Al (p, 4He)60Ni and at different emission energiesand angles.

Level Density of the Pre Compound Nucleus Calculations for [28 60Ni], [28 58Ni], Using Exciton Model

2021 ◽  
Vol 900 ◽  
pp. 34-41
Author(s):  
Maha Taha Idrees
Keyword(s):  
Energy Dependence ◽  
Compound Nucleus ◽  
Level Density ◽  
Major Effect ◽  
State Density ◽  
Hole State ◽  
Two Component System ◽  
Exciton Model ◽  
Component System ◽  
Two Component

The level density for the pre compound [28 60Ni],[2858Ni], at certain exciton number, are calculated for one &two component system based on Ericson's formula. The Pauli, Slight and Pairing correction are examined with the behavior of the level density for one & two components. The particle – hole state density has been calculated by means of the energy dependence of excited number in [28 60Ni], [2858Ni]. The present results are compared between one &two component with Pauli, Slight and Pairing correction. The Pairing correction has a major effect in the present calculations. Keyword: level density, Exciton model, [28 60Ni],[2858Ni], , Formula ESM.

Superconductivity, oxygen content, and hole state density in Bi2Sr1.75Ca1.25Cu2O8.18+y (−0.09 < y ≤ ) and Bi1.6Pb0.4Sr1.9Ca2Cu3Oz

1996 ◽  
Vol 268 (1-2) ◽  
pp. 107-114 ◽  
Author(s):  
A.R. Moodenbaugh ◽  
D.A. Fischer ◽  
Y.L. Wang ◽  
Y. Fukumoto
Keyword(s):  
Oxygen Content ◽  
State Density ◽  
Hole State

Particle-hole state density in the uniform spacing model

1971 ◽  
Vol 166 (2) ◽  
pp. 231-240 ◽  
Author(s):  
Frederick C. Williams
Keyword(s):  
State Density ◽  
Hole State ◽  
Uniform Spacing

scholarly journals Ultra-Soft X-Ray Absorption Spectroscopy: A Bulk and Surface Probe of Materials

1993 ◽  
Vol 307 ◽  
Author(s):  
Daniel A. Fischer ◽  
Gary E. Mitchell ◽  
Benjamin M. Dekoven ◽  
Alvin T. Yeh ◽  
John L. Gland ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Polymeric Materials ◽  
Fluorescence Yield ◽  
State Density ◽  
Hole State ◽  
High Tc ◽  
X Ray ◽  
Surface Probe ◽  
Depth Sensitivity ◽  
X Ray Absorption

ABSTRACTDirect comparisons between the surface and bulk of diverse materials can be made by simultaneous electron yield (5 nm depth sensitivity) and fluorescence yield (200 nm) ultra soft x-ray absorption spectroscopy measurements utilizing a rapid sample interchange apparatus. For example the orientations of functional groups have been characterized at and near the surface of a series of model polymeric materials highlighting the chemical and molecular sensitivity of ultra soft x-ray absorption spectroscopy. In addition we discuss a bulk sensitive use of fluorescence yield to non destructively study a buried metal polymer interface. A second bulk sensitive example is the use of fluorescence yield oxygen K near edge x-ray spectroscopy as a method to determine the hole state density of high Tc materials.

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