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Solid state astrochemical reaction pathways have the potential to link the formation of small nitrogen-bearing species, like NH3 and HNCO, and prebiotic molecules, specifically amino acids. To date, the chemical origin of such small…

Astrophysics of Galaxies · Physics 2017-05-26 Gleb Fedoseev , Sergio Ioppolo , Dongfeng Zhao , Thanja Lamberts , Harold Linnartz

Two charge- and current neutral plasma beams are modelled with a one-dimensional PIC simulation. The beams are uniform and unbounded. The relative speed between both beams is 0.4c. One beam is composed of electrons and protons and one out…

Astrophysics · Physics 2014-11-18 M E Dieckmann , A Bret

Superbursts from accreting neutron stars probe nuclear reactions at extreme densities ($\rho \approx 10^{9}~g\,cm^{-3}$) and temperatures ($T>10^9~K$). These bursts ($\sim$1000 times more energetic than type I X-ray bursts) are most likely…

Solar and Stellar Astrophysics · Physics 2015-06-19 Jeremy Stevens , Edward F. Brown , Andrew Cumming , Richard Cyburt , Hendrik Schatz

A novel two-stage helium buffer gas cooled beam source is introduced. The properties of the molecular beams produced from this source are investigated theoretically using the CaF as a test molecule. The gas-phase molecules are first…

Atomic Physics · Physics 2020-04-14 Vijay Singh

Cryogenic buffer-gas beam sources are capable of producing intense beams of a wide variety of molecules, and have a number of advantages over traditional supersonic expansion sources. In this work, we report on a neon matrix isolation study…

Background: The inner crust of a neutron star is believed to consist of Coulomb-frustrated complex structures known as "nuclear pasta" that display interesting and unique low-energy dynamics. Purpose: To elucidate the structure and…

Nuclear Theory · Physics 2015-06-12 K. H. O. Hasnaoui , J. Piekarewicz

Ice chemistry in the dense, cold interstellar medium (ISM) is probably responsible for the formation of interstellar complex organic molecules (COMs). Recent laboratory experiments performed at T=4 K have shown that irradiation of CO:N2 ice…

Astrophysics of Galaxies · Physics 2024-01-09 Rafael Martín-Doménech , Alexander DelFranco , Karin I. Öberg , Mahesh Rajappan

Free-jet atomic, cluster and molecular sources are typically used to produce beams of low-energy, neutral particles and find application in a wide array of technologies, from neutral atom microscopes to instruments for surface processing.…

Atomic Physics · Physics 2025-02-17 Jack Kelsall , Aleksandar Radic , John Ellis , David J. Ward , Andrew Jardine

C-fractionation has been studied from a theoretical point of view with different models of time-dependent chemistry, including both isotope-selective photodissociation and low-temperature isotopic exchange reactions. Recent chemical models…

Astrophysics of Galaxies · Physics 2020-10-05 L. Colzi , O. Sipilä , E. Roueff , P. Caselli , F. Fontani

CREAM (Cosmic Ray Energetics And Mass) is a multi-flight balloon mission designed to collect direct data on the elemental composition and individual energy spectra of cosmic rays. Two instrument suites have been built to be flown…

CREAM (Cosmic Ray Energetics And Mass) is a multi-flight balloon mission designed to collect direct data on the elemental composition and individual energy spectra of cosmic rays. Two instrument suites have been built to be flown…

The article considers the simulation of the formation of a multilayer nanocomposite, the combination of elements of which gives rise to the effect of a spin valve. The relevance and importance of the effects in the field of spintronics and…

Superconductivity · Physics 2022-08-18 A. V. Vakhrushev , A. Yu. Fedotov , Yu. B. Savva , A. S. Sidorenko

In this article a new, multi-functional, high-vacuum astrophysical ice setup, VIZSLA (Versatile Ice Zigzag Sublimation Setup for Laboratory Astrochemistry), is introduced. The instrument allows the investigation of astrophysical processes…

Instrumentation and Methods for Astrophysics · Physics 2022-01-05 Gábor Bazsó , István Pál Csonka , Sándor Góbi , György Tarczay

Operando/in-situ liquid cell transmission electron microscopy (LCTEM) allows for real time imaging of dynamic nanoscale liquid-based processes. However, due to the thick liquid cell of traditional LCTEM holders and thus scattering of the…

Ice mantles that formed on top of dust grains are photoprocessed by the secondary ultraviolet (UV) field in cold and dense molecular clouds. UV photons induce photochemistry and desorption of ice molecules. Experimental simulations…

Solar and Stellar Astrophysics · Physics 2015-10-20 R. Martín-Doménech , J. Manzano-Santamaría , G. M. Muñoz Caro , G. A. Cruz-Díaz , Y. -J. Chen , V. J. Herrero , I. Tanarro

In quantum interferometry, it is vital to control and utilize nonlinear interactions for achieving high-precision measurements. Attribute to their long coherent time and high controllability, ultracold atoms including Bose condensed atoms…

Quantum Gases · Physics 2012-02-06 Chaohong Lee , Jiahao Huang , Haiming Deng , Hui Dai , Jun Xu

We use the spectral synthesis code Cloudy to tabulate the properties of gas for an extensive range in redshift (z=0 to 9), temperature (log T [K] = 1 to 9.5), metallicity (log Z/$\mathrm{Z}_{\odot}$ = -4 to +0.5, Z=0), and density (log…

Astrophysics of Galaxies · Physics 2020-08-05 Sylvia Ploeckinger , Joop Schaye

Two different types of experiments were performed. In the first experiment, we studied the low-temperature condensation of vaporized graphite inside bulk liquid helium, while in the second experiment, we studied the condensation of single…

Atomic and Molecular Clusters · Physics 2018-05-07 S. A. Krasnokutski , M. Goulart , E. B. Gordon , A. Ritsch , C. Jäger , M. Rastogi , W. Salvenmoser , Th. Henning , P. Scheier

The reaction between atomic carbon in its ground electronic state, C(3P), and nitrous oxide, N2O, has been studied below room temperature due to its potential importance for astrochemistry, with both species considered to be present at high…

Astrophysics of Galaxies · Physics 2022-02-09 Kevin M. Hickson , Jean-Christophe Loison , Pascal Larregaray , Laurent Bonnet , Valentine Wakelam

A multi-beam ultra-high vacuum apparatus is presented. In this article we describe the design and construction of a new laboratory astrophysics experiment -- VErs de NoUvelles Synth\`eses (VENUS) -- that recreates the solid-state…

Instrumentation and Methods for Astrophysics · Physics 2020-12-15 Emanuele Congiu , Abdellahi Sow , Thanh Nguyen , Saoud Baouche , François Dulieu
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