@article{oai:repo.qst.go.jp:00048614, author = {原, 広行 and 大橋, 隼人 and Li, Bown and Dunne, Padraig and O'Sullivan, Gerry and 佐々木, 明 and 鈴木, 千尋 and 田村, 直樹 and 坂上, 裕之 and 加藤, 太治 and 村上, 泉 and 東口, 武史 and 佐々木 明}, issue = {8}, journal = {APL Photonics}, month = {Aug}, note = {The soft x-ray spectra of heavy element plasmas are frequently dominated by unre- solved transition array (UTA) emission. We describe the spectral evolution of an intense UTA under optically thin conditions in platinum plasmas. The UTA was observed to have a peak wavelength around 4.6 nm at line-of-sight averaged elec- tron temperatures less than 1.4 keV at electron densities of (2.5–7.5) × 1013 cm_x1113088_3. The UTA spectral structure was due to emission from 4d–4f transitions in highly charged ions with average charge states of q = 20–40. A numerical simula- tion successfully reproduced the observed spectral behavior.}, pages = {081301-1--081301-7}, title = {Spectral evolution of soft x-ray emission from optically thin, high electron temperature platinum plasmas}, volume = {2}, year = {2017} }