Results 31 to 40 of about 159,297 (260)

The Wisconsin Plasma Astrophysics Laboratory

, 2015
The Wisconsin Plasma Astrophysics Laboratory (WiPAL) is a flexible user facility designed to study a range of astrophysically relevant plasma processes as well as novel geometries that mimic astrophysical systems. A multi-cusp magnetic bucket constructed
Brookhart, M., Clark, M., Cooper, C. M., Desangles, V., Egedal, J., Endrizzi, D., Flanagan, K., Forest, C. B., Khalzov, I. V., Li, H., Miesch, M., Milhone, J., Nornberg, M., Olson, J., Peterson, E., Roesler, F., Schekochihin, A., Schmitz, O., Siller, R., Spitkovsky, A., Stemo, A., Wallace, J., Weisberg, D., Zweibel, E.   +23 more
core   +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

Recent Astrophysics Results from ORELA and Possible Future Experiments at ORELA and SNS

, 2002
I present some recent results from experiments at the Oak Ridge Electron Linear Accelerator (ORELA) and discuss their impact in nuclear astrophysics. I then describe some possible future nuclear astrophysics experiments at ORELA and at the Spallation ...
Koehler, P. E.
core   +1 more source

Exploring the nature of collisionless shocks under laboratory conditions [PDF]

, 2014
Collisionless shocks are pervasive in astrophysics and they are critical to understand cosmic ray acceleration. Laboratory experiments with intense lasers are now opening the way to explore and characterise the underlying microphysics, which determine ...
Bret, A., Fiuza, F., Fonseca, R. A., Silva, L. O., Stockem, A.   +4 more
core   +2 more sources

Laboratory Astrophysics: Lessons for Epistemology of Astrophysics

, 2023
AbstractAstrophysics is often cast as an observational science, devoid of traditional experiments, along with astronomy and cosmology. Yet, a thriving field of experimental research exists called laboratory astrophysics. How should we make sense of this apparent tension?
openaire   +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   +1 more source

Photon‐Sphere Modes in Curved Optical Microcavities: A Black‐Hole Analogue Laser

Advanced Science, EarlyView.
An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Chenni Xu, Aswathy Sundaresan, Nazire‐Begüm Kazkal, Clement Lafargue, Lior Zarfaty, Li‐Gang Wang, Ofek Birnholtz, Dominique Decanini, Melanie Lebental, Patrick Sebbah   +9 more
wiley   +1 more source

Advances in instrumentation for nuclear astrophysics

AIP Advances, 2014
The study of the nuclear physics properties which govern energy generation and nucleosynthesis in the astrophysical phenomena we observe in the universe is crucial to understanding how these objects behave and how the chemical history of the universe ...
S. D. Pain
doaj   +1 more source