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PreprintarXiv licencearXiv

Polarization measurements of the 2s--2p3/2 VUV transition in N4+ excited by electron collisions

  • Nobuyuki Nakamura
  • Ryohko Ishikawa
  • Motoshi Goto
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Abstract

We present the linear polarization of the 2s--2p3/2 transition in Li-like N4+ excited by electron collisions, measured at electron energies between 85 and 1000~eV. The measured polarizations are compared with theoretical values calculated using the Flexible Atomic Code (FAC). Although the overall trend that the degree of polarization decreases with increasing electron energy is reproduced, the theoretical values are systematically larger in magnitude than the experimental values. After examining possible experimental sources of depolarization, we suggest that the discrepancy likely originates from an overestimation in the theoretical model. Further theoretical and experimental investigations along the isoelectronic sequence are needed to resolve this discrepancy.

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Cite

BibTeXRIS
BibTeX
@misc{nakamura2026polarization,
  title = {{Polarization measurements of the $2s$--$2p_3/2$ VUV transition in N$^4+$ excited by electron collisions}},
  author = {Nobuyuki Nakamura and Ryohko Ishikawa and Motoshi Goto},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.01242},
  eprint = {2609.01242},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.01242},
}
RIS
TY  - UNPB
TI  - Polarization measurements of the 2s--2p_3/2 VUV transition in N^4+ excited by electron collisions
AU  - Nobuyuki Nakamura
AU  - Ryohko Ishikawa
AU  - Motoshi Goto
PY  - 2026
DA  - 2026/09/01
PB  - arXiv
DO  - 10.48550/arxiv.2609.01242
UR  - https://arxiv.org/abs/2609.01242
AB  - We present the linear polarization of the 2s--2p_3/2 transition in Li-like N^4+ excited by electron collisions, measured at electron energies between 85 and 1000~eV. The measured polarizations are compared with theoretical values calculated using the Flexible Atomic Code (FAC). Although the overall trend that the degree of polarization decreases with increasing electron energy is reproduced, the theoretical values are systematically larger in magnitude than the experimental values. After examining possible experimental sources of depolarization, we suggest that the discrepancy likely originates from an overestimation in the theoretical model. Further theoretical and experimental investigations along the isoelectronic sequence are needed to resolve this discrepancy.
ER  -