ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Subquadratic quantum number dependence and other anomalies of vibrational dephasing in liquid nitrogen: Molecular dynamics simulation study from the triple point to the critical point and beyond

Gayathri, N and Bagchi, B (1999) Subquadratic quantum number dependence and other anomalies of vibrational dephasing in liquid nitrogen: Molecular dynamics simulation study from the triple point to the critical point and beyond. In: Physical Review Letters, 82 (24). 4851-4854 .

[img] PDF
Subquadratic_Quantum_Number.pdf - Published Version
Restricted to Registered users only

Download (145Kb) | Request a copy
Official URL: http://prl.aps.org/abstract/PRL/v82/i24/p4851_1

Abstract

Vibrational phase relaxation near gas-liquid and liquid-solid phase coexistence has been studied by molecular dynamics simulations of N-N stretch in N-2. Experimentally observed pronounced insensitivity of phase relaxation from the triple point to beyond the boiling point is found to originate from a competition between density relaxation and resonant-energy transfer terms. The sharp rise in relaxation rate near the critical point (CP) can be attributed at least partly to the sharp, rise in vibration-rotation coupling contribution. Substantial subquadratic quantum number dependence of overtone dephasing rate is found near the CP and in supercritical fluids. [S0031-9007 (99)09318-7].

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The American Physical Society.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 30 Jun 2011 08:12
Last Modified: 30 Jun 2011 08:12
URI: http://eprints.iisc.ernet.in/id/eprint/38816

Actions (login required)

View Item View Item