Results 131 to 140 of about 64,474 (291)

Do the environmental conditions affect the dust-induced fragmentation in low-metallicity clouds ?: Effect of pre-ionization and far-ultraviolet/cosmic-ray fields

, 2012
We study effects of the fully ionized initial state, or pre-ionization, on the subsequent thermal evolution of low-metallicity clouds under various intensities of the external far-ultraviolet(FUV) and cosmic-ray(CR) fields.
Omukai, Kazuyuki
core   +1 more source

Photofragment Translational Spectroscopy

CHIMIA, 1994
Photofragment translational spectroscopy (PTS) is a technique for studying the mechanisms and the dynamics of photodissociation processes under collision-free conditions.
Peter Felder
doaj   +2 more sources

Experimental and theoretical investigation of the crossover from the ultracold to the quasiclassical regime of photodissociation [PDF]

, 2018
I. Majewska, Stanimir Kondov, C.-H. Lee, Mickey McDonald, B. H. McGuyer, Robert Moszyński, Tanya Zelevinsky   +6 more
openalex   +1 more source

photodissociation

Citation: 'photodissociation' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.12524 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests
openaire   +1 more source

Chemistry of a protoplanetary disk with grain settling and Lyman alpha radiation

, 2010
We present results from a model of the chemical evolution of protoplanetary disks. In our models we directly calculate the changing propagation and penetration of a high energy radiation field with Lyman alpha radiation included.
Bergin, Edwin A., Bethell, Thomas J., Calvet, Nuria, Fogel, Jeffrey K. J., Semenov, Dmitry   +4 more
core   +1 more source

Comparison of observed and simulated NO₂ photodissociation frequencies in a cloudless atmosphere and in continental boundary layer clouds [PDF]

, 2000
Barbara Früh, Thomas Trautmann, Manfred Wendisch, Andreas Keil   +3 more
openalex   +1 more source

Sigma*-mediated electronic relaxation in 200nm photoexcited ammonia and heteroaromatics

EPJ Web of Conferences, 2013
Time–resolved photoelectron spectra of ammonia display combination bands of the umbrella and stretching modes associated with the N–H coordinate of σ* relaxation. Time–resolved photodissociation studies determine timescales
Evans N. L., Yu H., Ullrich S.
doaj   +1 more source

Dark cloud-type chemistry in photodissociation regions with moderate ultraviolet field [PDF]

, 2021
M. S. Kirsanova, A. Punanova, D. Semenov, A. I. Vasyunin   +3 more
openalex   +1 more source

The Molecular Cloud Life Cycle. I. Constraining H2 Formation and Dissociation Rates with Observations

The Astrophysical Journal
Molecular clouds (MCs) are the birthplaces of new stars in galaxies. A key component of MCs are photodissociation regions (PDRs), where far-ultraviolet radiation plays a crucial role in determining the gas’s physical and chemical state.
Shmuel Bialy, Blakesley Burkhart, Daniel Seifried, Amiel Sternberg, Benjamin Godard, Mark R. Krumholz, Stefanie Walch, Erika Hamden, Thomas J. Haworth, Neal J. Turner, Min-Young Lee, Shuo Kong   +11 more
doaj   +1 more source

H2 emission arises outside photodissociation regions in ultraluminous infrared galaxies [PDF]

, 2010
Nadia L. Zakamska
openalex   +1 more source