Conference Contributions /TS

View results by

By Date
Authors
Titles
Subjects

Search within this collection:

Recent Submissions

Evaluation of Loss-of-Coolant Accident Simulation Tests with the Fuel...
Manngård, Tero; Jernkvist, Lars Olof; Massih, Ali : Quantum Technologies AB (2011) HI TEMP 2011 Conference, September 20 to September 22, 2011 Millennium Hotel Boston, MA, USA	conference PAPER

English abstract

An integrated computer model for reactor fuel cladding rupture under loss-of-coolant accident (LOCA) conditions has been implemented in the transient fuel rod performance code FRAPTRAN. The model treats the zirconium alloy solid-to-solid phase transformation kinetics, cladding oxidation, cladding deformation, and eventually cladding rupture concurrently. It is for use together with the recently developed finite element based solution module in FRAPTRAN-1.4. The model has been emp...

TR11-008V1.pdf (634.3Kb)

Transition rates in the B-, C-, N-, O-, and Ne-like sequences from re...
Jönsson, Per; Gustafsson, Stefan; Ekman, Jörgen; Bengtsson, Peter; Rynkun, Pavel; Gaigalas, Gediminas Conference poster in Abstracts 43rd Conference of the European Group for Atomic Systems (EGAS); : European Physical Society europhysics conference abstracts; (2011) 43st European Group for Atomic Systems, Fribourg (Switzerland), June 28 – July 2, 2011	conference POSTER

English abstract

Atomic data are important in astrophysical applications and transition data can be used in the determination of element abundances and plasma diagnostics [1]. To provide for the extensive data needs a number of general computer codes such as SUPERSTRUCTURE, CIV3, and ATSP2K have been developed. As an alternative to these codes, which all rely on the Breit-Pauli approximation, the fully relativistic GRASP2K code [2] can be used. GRASP2K is based on the multicon guration Dirac...

Interaction of Variational Localized Correlation Functions for Atomic...
Verdebout, Simon; Rynkun, Pavel; Jönsson, Per; Gaigalas, Gediminas; Froese Fischer, Charlotte; Godefroid, Michel (2011) XXVII International Conference on Photonic, Electronic and Atomic Collisions Belfast, (Northern Ireland, UK), July 27 – August 2, 2011.	conference POSTER

English abstract

We present some progress associated to the localised correlation function interaction (LCFI) method. In this report, the LCFI method is tested not only for total energy but also for the speci c mass shift operator, the hyper ne structure parameters and the transition probabilities. These properties are computed for the three lowest electronic states of the beryllium atom. These calculations illustrate the importance of the contraction e ects.

Atomic properties of neutral Ne using the LCFI method
Verdebout, Simon; Li, Jiguang; Naze, Cedric; Godefroid, Michel; Jönsson, Per; Gaigalas, Gediminas Conference poster in Abstracts 43rd Conference of the European Group for Atomic Systems (EGAS); : European Physical Society europhysics conference abstracts; (2011) 43rd European Group for Atomic Systems, Fribourg (Switzerland), June 28 – July 2, 2011.	conference POSTER

English abstract

The localised correlation function interaction (LCFI) method, based on the biorthonormal orbital transformations and e cient counter-transformations of the con guration interaction eigenvectors [1], was shown to be e cient for describing the total energy of the beryllium atom [2]. Each localized correlation function (LCF) is dedicated to the description of the electronic correlation associated to a given electron pair. Such functions are produced, using the multicon guration ...

Interaction of Variational Localized Correlation Functions for Atomic...
Verdebout, Simon; Godefroid, Michel; Rynkun, Pavel; Jönsson, Per; Gaigalas, Gediminas; Froese Fischer, Charlotte Conference poster in Abstracts 43rd Conference of the European Group for Atomic Systems (EGAS); : European Physical Society europhysics conference abstracts; (2011) 43rd European Group for Atomic Systems, Fribourg (Switzerland), June 28 – July 2, 2011	conference POSTER

English abstract

Variational methods are used for targeting speci c correlation e ects by tailoring the con- guration space. Independent sets of correlation orbitals, embedded in the localized correlation functions (LCFs), are produced from the multicon guration Hartree-Fock (MCHF) or Dirac- Hartree-Fock (MCDHF) calculations [1,2]. These non-orthogonal functions are then coupled to each other by solving the associated generalized eigenproblem. The Hamiltonian and overlap matrix elements are...

Conference Contributions /TS

.

Conference Contributions /TS

View results by

Recent Submissions

Search

Browse

All contents

This Collection

My Account