Results 21 to 30 of about 11,516 (254)

Progress in Jinping Underground Nuclear Astrophysics Experiment

Yuanzineng kexue jishu, 2023
Nuclear astrophysics is an interdisciplinary subject of nuclear physics and astrophysics. As the forefront of fundamental research, it has played an important role in the process of deepening understanding of the universe and stellar evolution.
LIAN Gang;GUO Bing;SHEN Yangping;SU Jun;LI Zhihong;HE Jianjun;TANG Xiaodong;CUI Baoqun;SUN Liangting;AN Zhu;LIU Weiping
doaj  

Underground Measurements of Nuclear Reaction Cross-Sections Relevant to AGB Stars

Universe, 2021
Nuclear reaction cross sections are essential ingredients to predict the evolution of AGB stars and understand their impact on the chemical evolution of our Galaxy.
Chemseddine Ananna, Francesco Barile, Axel Boeltzig, Carlo Giulio Bruno, Francesca Cavanna, Giovanni Francesco Ciani, Alessandro Compagnucci, Laszlo Csedreki, Rosanna Depalo, Federico Ferraro, Eliana Masha, Denise Piatti, David Rapagnani, Jakub Skowronski   +13 more
doaj   +1 more source

Laboratory Astrophysics in Europe

, 2022
Europe has a broad activity in Laboratory Astrophysics, covering theory and experiment, as well initiatives promoting open science, including databases and tools aiding connection to astrophysical modelling and interpretation of observations. The talk will present some examples of Laboratory Astrophysics in Europe, as well as examples of organisation ...
Barklem, Paul, Dubernet, Marie-Lise
openaire   +2 more sources

Formation of CO2 Driven by Photochemistry of Water Ice Mixed with Carbon Grains

The Astrophysical Journal, 2023
We present results on photochemistry of carbon-grains/water-ice mixtures at temperatures from 10 to 150 K. Such a temperature range corresponds to the physical conditions found in molecular clouds, hot cores and corinos, protostellar envelopes, and ...
Alexey Potapov, Dmitry Semenov, Cornelia Jäger, Thomas Henning   +3 more
doaj   +1 more source

Elucidating the Formation of Ethynylbutatrienylidene (HCCCHCCC; X1A′) in the Taurus Molecular Cloud (TMC-1) via the Gas-phase Reaction of Tricarbon (C3) with the Propargyl Radical (C3H3)

The Astrophysical Journal Letters, 2023
The recent astronomical detection of ethynylbutatrienylidene (HCCCHCCC)—a high-energy isomer of triacetylene (HCCCCCCH) and hexapentaenylidene (H _2 CCCCCC)—in TMC-1 puzzled the laboratory astrophysics community since proposed reaction pathways could not
Alexander M. Mebel, Marcelino Agúndez, José Cernicharo, Ralf I. Kaiser   +3 more
doaj   +1 more source

Magnetic field generation and diffusion by a laser-produced blast wave propagating in non-homogenous plasma

New Journal of Physics, 2015
In this paper we discuss the magnetic field self generation, via the so-called Biermann battery effect, and its diffusion for a blast wave (BW) expanding in a perturbed background medium.
A Marocchino, S Atzeni, A Schiavi
doaj   +1 more source

Double to Tenfold M-shell Photoionization of Singly Charged Lanthanum Ions

The Astrophysical Journal
Using the photon-ion merged-beams technique at the PETRA III synchrotron light source, we have measured cross sections for double and up to tenfold photoionization of La ^+ ions by a single photon in the energy range 820–1400 eV, where resonances and ...
Mirko Looshorn, B. Michel Döhring, Pierre-Michel Hillenbrand, Michael Martins, Alfred Müller, Simon Reinwardt, Jörn Seltmann, Florian Trinter, Shuxing Wang, Aloka Kumar Sahoo, Stephan Fritzsche, Stefan Schippers   +11 more
doaj   +1 more source

Detectors and Shieldings: Past and Future at LUNA

Universe
Nuclear reactions are responsible for the chemical evolution of stars, galaxies and the Universe. Unfortunately, at temperatures of interest for nuclear astrophysics, the cross-sections of the thermonuclear reactions are in the pico- femto-barn range and
Chemseddine Ananna, Lucia Barbieri, Axel Boeltzig, Matteo Campostrini, Fausto Casaburo, Alessandro Compagnucci, Laszlo Csedreki, Riccardo Maria Gesue, Jordan Marsh, Daniela Mercogliano, Denise Piatti, Duncan Robb, Ragandeep Singh Sidhu, Jakub Skowronski   +13 more
doaj   +1 more source

Nuclear astrophysics at Gran Sasso Laboratory: the LUNA experiment

EPJ Web of Conferences, 2018
LUNA is an experimental approach for the study of nuclear fusion reactions based on an underground accelerator laboratory. Aim of the experiment is the direct measurement of the cross section of nuclear reactions relevant for stellar and primordial ...
Cavanna Francesca
doaj   +1 more source

Speckle Observations With PISCO in Calern (France): III. Astrometric Measurements of Visual Double Stars in 2019 and New or Revised Orbits for STT531 AB, STT77 AB, STF1338 AB, COU1746, STT260, A1109 AB, HU1291, and A632 AB

Astronomische Nachrichten, EarlyView.
ABSTRACT We present relative astrometric measurements of visual double stars, made in 2019 with the speckle camera PISCO at the 1‐m Epsilon telescope of the C2PU facility (Observatoire de la Côte d'Azur, Calern site). Our observing list contains orbital couples as well as double stars whose motion is still uncertain.
J.‐L. Prieur, M. Scardia, J.‐P. Rivet, E. Aristidi, J. F. Ling, L. Piccotti, L. Pansecchi, R. W. Argyle, L. Abe, P. Bendjoya, L. Maccarini, D. Vernet   +11 more
wiley   +1 more source