A laboratory plasma experiment for X-ray astronomy using a compact electron beam ion trap (EBIT)
Abstract
We present the basic performance and experimental results of an electron beam ion trap (JAXA-EBIT), newly introduced to the Japanese astronomical community. Accurate atomic data are indispensable for the reliable interpretation of high-resolution X-ray spectra of astrophysical plasmas. The JAXA-EBIT generates highly charged ions under well-controlled laboratory conditions, providing experimental benchmarks for atomic data. The JAXA-EBIT shows performance comparable to the Heidelberg compact EBIT through dielectronic recombination measurements of highly charged Ar ions. Furthermore, we conducted resonant photoexcitation spectroscopy of highly charged ions using the soft X-ray beamline BL17SU at the synchrotron radiation facility SPring-8. As a result, we successfully detected resonance transitions of He-like O and Ne-like Fe. These results demonstrate the capability of the JAXA-EBIT for precise measurement of atomic data and show that it serves as a powerful tool for advancing astrophysical research.
Keywords
Cite
@article{arxiv.2511.20135,
title = {A laboratory plasma experiment for X-ray astronomy using a compact electron beam ion trap (EBIT)},
author = {Yuki Amano and Leo Hirata and Moto Togawa and Hiromasa Suzuki and Hiroyuki A. Sakaue and Naoki Kimura and Nobuyuki Nakamura and Makoto Sawada and Masaki Oura and Jonas Danisch and Joschka Goes and Marc Botz and José R. Crespo López-urrutia and Hiroya Yamaguchi},
journal= {arXiv preprint arXiv:2511.20135},
year = {2025}
}
Comments
8pages, 4 figures, accepted for publication in Plasma and Fusion Research