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Overview

Our group consists of research scientists and students focussed on designing and executing ground-based laboratory astrophysics experiments for producing spectral data needed for analyzing space-based observations of celestial sources, including the Sun, comets, planetary atmospheres, galaxy clusters, cool and hot stars, and supernova remnants. The laboratory data come primarily from experiments conducted at the Lawrence Livermore National Laboratory's EBIT-I and SuperEBIT electron beam ion traps. We also generate data in measurements we undertake at the National Spherical Torus Experiment at the Princeton Plasma Physics Laboratory as well as through collaborations with other experimental groups, e.g., the LHD stellarator group at the National Institute of Fusion Science in Toki, Japan.

We apply our measurements to the analysis of astrophysical observations, which include spectra from Suzaku, Chandra, XMM-Newton, the Solar Maximum Mission, and Swift. Our work also entails the development of novel data analysis tools, such as the Photon Clean Method and the Flexible Atomic Code.

For more information or if you would like to join our laboratory astrophysics collaboration, please contact Peter Beiersdorfer (beiersdorfer(at)ssl.berkeley.edu).

People & Facilities

People
LLNL Electron Beam Ion Trap facility
National Spherical Torus Experiment

Special Compendium of papers describing spectroscopic research conducted with the Livermore electron beam ion traps. The compendium was produced by our group as part of the celebration of 20 Years of Spectroscopy with EBIT.

 

 

The Astro-EBIT Spectral Database

This is a compilation of laboratory measurements of wavelengths, cross sections, and example spectra of radiation emitted from celestial sources. These web pages are still work in progress.

Data for Collisional Sources
Data for Cometary Sources
Data for Photoionized Sources

The FLEXIBLE ATOMIC CODE (FAC)

The Flexible Atomic Code is a free resource for calculating atomic data and generating spectral models needed in the analysis of astrophysical spectra. Download it here.

Recent Results

• Laboratory astrophysics in the extreme ultraviolet
• Application of the Photon Clean Analysis code to determining the temperature of Cassiopeia A
• Description of the Flexible Atomic Code
• Charge exchange emission of iron
• Laboratory and solar emission of iron between 150-300 Å

Workshops & Conferences Organized by our Group

20 years of spectroscopy with the electron beam ion trap (November 12–16, 2006, Berkeley, California)

The 10th International Colloquium on Atomic Spectra and Oscillator Strengths (ASOS) for Astrophysical and Laboratory Plasmas
(2010, Berkeley, California)


 

LAST UPDATED April 18, 2009

SSL LabAstro - AstroEBIT