Results 111 to 120 of about 10,794 (262)
Journal of Synchrotron Radiation, Volume 32, Issue 4, Page 838-848, July 2025.An injector testbed for continuous‐wave free‐electron lasers based on a direct current gun and an interchangeable very high frequency gun is under construction. Its physical design and performance have been studied carefully.The continuous‐wave free‐electron laser (CW‐FEL), based on superconducting radiofrequency (SRF) technology with an electron bunch
Xinmeng Li +32 more
wiley +1 more source
Frontiers in Chemistry, 2019 A full dimensional Potential Energy Surface (PES) of the CO + N2 system has been generated by extending an approach already reported in the literature and applied to N2-N2 (Cappelletti et al., 2008), CO2-CO2 (Bartolomei et al., 2012), and CO2-N2 ...
Andrea Lombardi +7 more
doaj +1 more source
Cosmic-ray induced diffusion in interstellar ices
, 2014 Cosmic rays are able to heat interstellar dust grains. This may enhance molecule mobility in icy mantles that have accumulated on the grains in dark cloud cores.
Kalvans, Juris
core +2 more sources
Atlas of Cosmic-Ray-induced Astrochemistry [PDF]
The Astrophysical Journal, 2018 Abstract Cosmic rays are the primary initiators of interstellar chemistry, and getting a better understanding of the varying impact they have on the chemistry of interstellar clouds throughout the Milky Way will not only expand our understanding of interstellar medium chemistry in our own galaxy, but also aid in extra-galactic studies ...
Tobias Albertsson +2 more
openaire +3 more sources
Extended Red Emission and the evolution of carbonaceaous nanograins in NGC 7023
, 2008 Extended Red Emission (ERE) was recently attributed to the photo-luminescence of either doubly ionized Polycyclic Aromatic Hydrocarbons (PAH$^{++}$), or charged PAH dimers. We analysed the visible and mid-infrared (mid-IR) dust emission in the North-West
Berne, O. +5 more
core +3 more sources
Can We Draw Conclusions on Supernova Shock Wave Propagation Using Short‐Lived Radioactive Isotopes?
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT We run a three‐dimensional Galactic chemical evolution (GCE) model to follow the propagation of 53Mn (exclusively produced from type Ia supernovae, SNIa), 60Fe (exclusively produced from core‐collapse supernovae, CCSNe), 182Hf (exclusively produced from intermediate mass stars, IMSs), and 244Pu (exclusively produced from neutron star mergers ...
Benjamin Wehmeyer +5 more
wiley +1 more source
Infrared spectroscopy of the ν3 band of C3 in helium droplets
AIP Advances, 2018 The C3 molecule is an important species known to participate in key chemical reactions in combustion and astrochemistry. Its occurrence in environments of interest, its intramolecular physics, and its intermolecular reactivity have been areas of ...
Barbara A. Harruff-Miller +2 more
doaj +1 more source
Irradiation Investigation: Exploring the Molecular Gas in NGC 7293
Galaxies, 2020 Background: Many planetary nebulae retain significant quantities of molecular gas and dust despite their signature hostile radiation environments and energetic shocks.
Jesse Bublitz +7 more
doaj +1 more source
The largest oxigen bearing organic molecule repository
, 2007 We present the first detection of complex aldehydes and isomers in three typical molecular clouds located within 200pc of the center of our Galaxy. We find very large abundances of these complex organic molecules (COMs) in the central molecular zone ...
Huttemeister S. +8 more
core +1 more source
Journal of Computational Chemistry, Volume 46, Issue 2, January 15, 2025.The global minimum energy structure of astrophysically relevant MgCnH systems is linear when n is even, and cyclic when n is odd. ABSTRACT Magnesium‐containing molecules, including MgC2H, MgC4H, and MgC6H, have been detected in the interstellar medium, largely facilitated by their high dipole moments.
A. Karolyna M. S. Gomes +3 more
wiley +1 more source