Results 61 to 70 of about 36,483 (226)

CN and HCN in Dense Interstellar Clouds

, 2005
We present a theoretical investigation of CN and HCN molecule formation in dense interstellar clouds. We study the gas-phase CN and HCN production efficiencies from the outer photon-dominated regions (PDRs) into the opaque cosmic-ray dominated cores.
Amiel Sternberg, Bachiller R., Bachiller R., de Boisanger C., Flower D. R., Fuente A., Gai I. Boger, Greaves J. S., Herbst E., Jansen D. J., Le Bourlot J., Le Bourlot J., Lee H.-H., Lindqvist M., Messing I., Pineau des Forets G., Schilke P., Simon R., Storzer H., Truong-Bach, Viala Y. P., Vikor L.   +21 more
core   +2 more sources

Recent Advances in Top‐Down Proteomics for Single‐Cell Research

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Individual cells have distinctive molecular characteristics, including biologically relevant proteoforms. Although single‐cell (SC) molecular omics offer unprecedented insights into cellular heterogeneity and function, the characterization of proteoforms in SCs remains an uncharted territory.
Jake A. Melby, Pei Su, Fabio P. Gomes
wiley   +1 more source

Isolated spin polarized hydrogen atoms as targets for laser-induced polarized electron acceleration

Frontiers in Physics
High density Spin Polarized Hydrogen (SPH) atoms, which can be prepared using UV dissociation of hydro-halide molecules, can be attractive as potential targets for laser ionization/acceleration schemes aiming to create high energy and high current ...
Dimitris Sofikitis, Marios G. Stamatakis, Dimitrios G. Papazoglou, Dimitrios G. Papazoglou, T. Peter Rakitzis, T. Peter Rakitzis   +5 more
doaj   +1 more source

Ultrafast F2− photodissociation by intense laser pulses: a time-resolved fragment imaging study [PDF]

EPJ Web of Conferences, 2019
We present time-resolved coincidence imaging of F2− photodissociation by 400nm and intense 800nm ultrafast pulses. Coincidence fragment imaging reveals parallel and perpendicular single photon dissociation on 2Σg+ and 2πg states, and additional intense ...
Shahi Abhishek, Albeck Yishai, Strasser Daniel   +2 more
doaj   +1 more source

Destruction of Refractory Carbon in Protoplanetary Disks [PDF]

, 2017
The Earth and other rocky bodies in the inner solar system contain significantly less carbon than the primordial materials that seeded their formation. These carbon-poor objects include the parent bodies of primitive meteorites, suggesting that at least ...
Anderson, Dana E., Bergin, Edwin A., Blake, Geoffrey A., Ciesla, Fred J., Lee, Jeong-Eun, Visser, Ruud   +5 more
core   +3 more sources

Photodissociation dynamics of HCOOH(Ã)

Chemical Physics Letters, 1988
The technique of Doppler-resolved, polarised LIF spectroscopy has been employed in a study of the energy and momenta disposal in the OH fragments generated via photodissociation of HCOOH (A 1A″) at 225 nm. The majority of the excess energy resides in fragment translation (≈ 78%) and internal excitation of the HCO fragment (≈ 12%).
Brouard, M, Omahony, J
openaire   +2 more sources

Electron Transfer Dissociation and Synchrotron UV Photodissociation of Trapped Sodiated Ions Produced From Polyacrylates by Electrospray Ionization

Rapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Poly (acrylates)s can be distinguished from one another by the nature of their side chains. From model poly (acrylates)s, the purpose of this work was to evaluate the contribution of alternative activation techniques to the collisional activation, based on ion–ion and ion–photon interactions.
Inès Aloui, Véronique Legros, Cédric Przybylski, Matthieu Bourderioux, Alexandre Giuliani, William Buchmann   +5 more
wiley   +1 more source

The Photodissociation and Ionization Fronts in M17-SW Localized with FIFI-LS on Board SOFIA

The Astrophysical Journal, 2023
To understand star formation rates, studying feedback mechanisms that regulate star formation is necessary. The radiation emitted by nascent massive stars play a significant role in feedback by photodissociating and ionizing their parental molecular ...
Randolf Klein, Alexander Reedy, Christian Fischer, Leslie W. Looney, Sebastian Colditz, Dario Fadda, Alexander G. G. M. Tielens, Willam D. Vacca   +7 more
doaj   +1 more source

Dust temperature and time-dependent effects in the chemistry of photodissociation regions [PDF]

, 2019
When studying the chemistry of PDRs, time dependence becomes important as visual extinction increases, since certain chemical timescales are comparable to the cloud lifetime.
Caselli, Paola, Cazaux, Stephanie, Esplugues, Gisela, Hocuk, Seyit, Spaans, Marco   +4 more
core   +2 more sources

Quantum State‐Resolved Photodissociation Dynamics Study of Transition‐Metal Carbonyl and Nitrosyl

The Chemical Record, EarlyView.
State‐resolved scattering measurements provide experimental visualization of nuclear motions in reacting molecules. Carbonyls and nitrosyls are typical ligands in most of the transition‐metal complexes, which undergo dissociation upon visible and ultraviolet photoexcitation.
Keigo Nagamori, Hiroyuki Nakata, Hiroshi Kohguchi   +2 more
wiley   +1 more source