@article{oai:nifs-repository.repo.nii.ac.jp:00011625,
 author = {SAKAUE,  Hiroyuki A. and KATO,  Daiji and YAMAMOTO,  Norimasa and MURAKAMI,  Izumi and HARA,  Hirohisa and NAKAMURA,  Nobuyuki},
 issue = {1},
 journal = {The Astrophysical Journal},
 month = {Jan},
 note = {0000-0003-2209-3255, We present the energy dependence of the intensity ratio between the 3s3p3P2—3s3d3D3 transition at 233.9 Å and the 3s3p1P1—3s3d1D2 transition at 243.8 Å in Fe xv studied with an electron beam ion trap over an energy range that spans resonance excitation regions. Clear resonance structures are observed in the electron energy range of 400–600 eV. The energy dependence obtained in the experiment is compared with a collisional-radiative model calculation, including resonance excitations, and overall agreement is found. It is shown that the ratio strongly reflects the population of the 3s3p3P2 metastable state, which is the lower state of the 233.9 Å transition.},
 title = {Energy Dependence of the Line Ratio I(233.9 Å)/I(243.8 Å) in Fe xv Observed with an Electron Beam Ion Trap},
 volume = {943},
 year = {2023}
}