scholarly journals Unveiling shape resonances in H + HF collisions at cold energies

2020 ◽  
Vol 22 (43) ◽  
pp. 24943-24950
Author(s):  
P. G. Jambrina ◽  
L. González-Sánchez ◽  
M. Lara ◽  
M. Menéndez ◽  
F. J. Aoiz
Keyword(s):  
Angular Momentum ◽  
Resonance Peak ◽  
Rotational Angular Momentum ◽  
Shape Resonances

By aligning the reactant's rotational angular momentum it is possible not only to enhance or to diminish the intensity of the resonance, but also to split the resonance peak, disentangling the underlying contributions to the resonance pattern.

The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

2020 ◽  
Vol 153 (18) ◽  
pp. 184310
Author(s):  
P. T. Arndt ◽  
J. Huennekens ◽  
C. Packard ◽  
V. Tran ◽  
J. Carey ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Diatomic Molecules ◽  
Polarized Light ◽  
Rotational Angular Momentum

Waldmann-Snider Collision Integrals and Nonspherical Molecular Interaction. I. Collision Integrals for Pure Gases

1974 ◽  
Vol 29 (12) ◽  
pp. 1705-1716 ◽  
Author(s):  
W. E. Köhler
Keyword(s):  
Angular Momentum ◽  
Cross Sections ◽  
Molecular Interaction ◽  
Scattering Amplitude ◽  
Collision Operator ◽  
Positive Definiteness ◽  
Collision Integrals ◽  
General Properties ◽  
Relaxation Coefficients ◽  
Rotational Angular Momentum

Collision integrals of the linearized Waldmann-Snider collision operator for pure gases are defined. General properties due to invariances of the molecular interaction are discussed. Effective cross sections are introduced and expressed in terms of convenient bracket symbols. The positive definiteness of the relaxation coefficients is proved. The approximation of small nonsphericity for the scattering amplitude is explained and consequences for the collision integrals are investigated. Molecular cross sections describing the orientation and reorientation of the molecular rotational angular momentum are defined. Expressions for effective cross sections relevant for the various nonequilibrium alignment phenomena are presented.

JACOBI BIFURCATION IN HOT ROTATING NUCLEI WITH A LSD + YUKAWA FOLDED APPROACH

2009 ◽  
Vol 18 (04) ◽  
pp. 986-995 ◽  
Author(s):  
JOHANN BARTEL ◽  
BOZENA NERLO-POMORSKA ◽  
KRZYSZTOF POMORSKI
Keyword(s):  
Angular Momentum ◽  
Nuclear Energy ◽  
Nuclear Temperature ◽  
The Stability ◽  
Rotational Angular Momentum ◽  
Rotating Nuclei

The "Modified Funny-Hills parametrisation" is used together with the Lublin-Strasbourg Drop Model and Strutinsky type shell corrections to determine the stability of hot rotating nuclei. Both the macroscopic and the microscopic part of the nuclear energy are evaluated by taking into account their dependence on the nuclear temperature and the rotational angular momentum. The Jacobi transition into triaxial shapes and the centrifugal-fission instability are studied.

Femtosecond Time-Resolved Photofragment Rotational Angular Momentum Alignment in Electronic Predissociation Dynamics

2016 ◽  
Vol 7 (22) ◽  
pp. 4458-4463 ◽  
Author(s):  
M. E. Corrales ◽  
P. S. Shternin ◽  
L. Rubio-Lago ◽  
R. de Nalda ◽  
O. S. Vasyutinskii ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Time Resolved ◽  
Rotational Angular Momentum

Effect of orbital and rotational angular momentum averaging on branching ratios of dynamical resonances in the reaction H+p-H2→o-H2+H

1988 ◽  
Vol 146 (5) ◽  
pp. 358-363 ◽  
Author(s):  
Mirjana Mladenovic ◽  
Meishan Zhao ◽  
Donald G. Truhlar ◽  
David W. Schwenke ◽  
Yan Sun ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Branching Ratios ◽  
Rotational Angular Momentum

High resolution studies of electron excitation VI. Resonance series in helium

1977 ◽  
Vol 352 (1670) ◽  
pp. 441-449 ◽  
Keyword(s):  
Angular Momentum ◽  
High Resolution ◽  
Elastic Scattering ◽  
General Scheme ◽  
Optical Excitation ◽  
Electron Excitation ◽  
Excitation Functions ◽  
High Angular Momentum ◽  
Shape Resonances

We discuss the classification of resonances observed in the optical excitation functions of helium and show that there are series of terms 1s ns 2 2 S and 1s ns n p 2 P. Two other resonances are identified as 1s 3p 2 2 D and possibly 1s 3p 2 2 S and may also be members of series. Strong features in the excitation functions of D states are identified as shape resonances in states of high angular momentum. We draw attention to a number of sharp and weak features which can be seen both in excitation studies and elastic scattering, but which do not fit into the general scheme.

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