A coupled-cluster study of photodetachment cross sections of closed-shell anions

2014 ◽  
Vol 141 (17) ◽  
pp. 174315 ◽  
Author(s):  
Janusz Cukras ◽  
Piero Decleva ◽  
Sonia Coriani
Keyword(s):  
Cross Sections ◽  
Closed Shell ◽  
Coupled Cluster

Stresses and Deformations of Toroidal Shells of Elliptical Cross Section: With Applications to the Problems of Bending of Curved Tubes and of the Bourdon Gage

1952 ◽  
Vol 19 (1) ◽  
pp. 37-48
Author(s):  
R. A. Clark ◽  
T. I. Gilroy ◽  
E. Reissner
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Practical Interest ◽  
Closed Shell ◽  
Open Shell ◽  
Elliptical Cross Section ◽  
Axially Symmetric ◽  
Elliptical Cross ◽  
Two Parameters ◽  
Toroidal Shells

Abstract This paper is concerned with the application of the theory of thin shells to several problems for toroidal shells with elliptical cross section. These problems are as follows: (a) Closed shell subjected to uniform normal wall pressure. (b) Open shell subjected to end bending moments. (c) Combination of the results for the first and second problems in such a way as to obtain results for the stresses and deformations in Bourdon tubes. In all three problems the distribution of stresses is axially symmetric but only in the first problem are the displacements axially symmetric. The magnitude of stresses and deformations for given loads depends in all three problems on the magnitude of the two parameters bc/ah and b/c where b and c are the semiaxes of the elliptical section, a is the distance of the center of the section from the axis of revolution, and h is the thickness of the wall of the shell. For sufficiently small values of bc/ah trigonometric series solutions are obtained. For sufficiently large values of bc/ah asymptotic solutions are obtained. Numerical results are given for various quantities of practical interest as a function of bc/ah for the values 2, 1, 1/2, 1/4 of the semiaxes ratio b/c. It is suggested that the analysis be extended to still smaller values of b/c and to cross sections other than elliptical.

Coupled cluster energy derivatives. Analytic Hessian for the closed‐shell coupled cluster singles and doubles wave function: Theory and applications

1990 ◽  
Vol 92 (8) ◽  
pp. 4924-4940 ◽  
Author(s):  
Henrik Koch ◽  
Hans Jo/rgen Aa. Jensen ◽  
Poul Jo/rgensen ◽  
Trygve Helgaker ◽  
Gustavo E. Scuseria ◽  
...  
Keyword(s):  
Wave Function ◽  
Function Theory ◽  
Closed Shell ◽  
Coupled Cluster ◽  
Energy Derivatives ◽  
Cluster Energy

A closed-shell coupled-cluster treatment of the Breit–Pauli first-order relativistic energy correction

2004 ◽  
Vol 121 (14) ◽  
pp. 6591-6598 ◽  
Author(s):  
Sonia Coriani ◽  
Trygve Helgaker ◽  
Poul Jørgensen ◽  
Wim Klopper
Keyword(s):  
Closed Shell ◽  
Coupled Cluster ◽  
Relativistic Energy ◽  
First Order ◽  
Energy Correction

Symmetry exploitation in closed-shell coupled-cluster theory with spin-orbit coupling

2011 ◽  
Vol 135 (3) ◽  
pp. 034115 ◽  
Author(s):  
Zheyan Tu ◽  
Dong-Dong Yang ◽  
Fan Wang ◽  
Jingwei Guo
Keyword(s):  
Closed Shell ◽  
Orbit Coupling ◽  
Coupled Cluster ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Coupled Cluster Theory ◽  
Cluster Theory

On certain correspondences among various coupled-cluster theories for closed-shell systems

Pramana ◽  
1982 ◽  
Vol 18 (3) ◽  
pp. 261-270 ◽  
Author(s):  
Sourav Pal ◽  
M Durga Prasad ◽  
Debashis Mukherjee
Keyword(s):  
Closed Shell ◽  
Coupled Cluster
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