Comprehensive Laboratory Benchmark of K-shell Dielectronic Satellites of Fe xxv–xxi Ions
We report on comprehensive laboratory studies of the K-shell dielectronic recombination resonances of Fe xxv – xxi ions that prominently contribute to the hard X-ray spectrum of hot astrophysical plasmas. By scanning a monoenergetic electron beam to resonantly excite trapped Fe ions in an electron b...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/addaba |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850169924558782464 |
|---|---|
| author | Chintan Shah Pedro Amaro Filipe Grilo Ming Feng Gu Liyi Gu José Paulo Santos F. Scott Porter Thomas Pfeifer Maurice A. Leutenegger José R. Crespo López-Urrutia |
| author_facet | Chintan Shah Pedro Amaro Filipe Grilo Ming Feng Gu Liyi Gu José Paulo Santos F. Scott Porter Thomas Pfeifer Maurice A. Leutenegger José R. Crespo López-Urrutia |
| author_sort | Chintan Shah |
| collection | DOAJ |
| description | We report on comprehensive laboratory studies of the K-shell dielectronic recombination resonances of Fe xxv – xxi ions that prominently contribute to the hard X-ray spectrum of hot astrophysical plasmas. By scanning a monoenergetic electron beam to resonantly excite trapped Fe ions in an electron beam ion trap and achieving a high electron–ion collision energy resolution of ∼7 eV, we resolve their respective KL n satellites up to ${n}^{{\prime} }=11$ . By normalization to known radiative recombination cross sections, we also determine their excitation cross sections and that of the continuum with uncertainties below 15% and verify our results with an independent normalization based on previous measurements. Our experimental data excellently confirm the accuracy and suitability of distorted-wave calculations obtained with the Flexible Atomic Code for modeling astrophysical and fusion plasmas. |
| format | Article |
| id | doaj-art-cf31513f834c42e092e2f40756ade55e |
| institution | OA Journals |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-cf31513f834c42e092e2f40756ade55e2025-08-20T02:20:37ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198713610.3847/1538-4357/addabaComprehensive Laboratory Benchmark of K-shell Dielectronic Satellites of Fe xxv–xxi IonsChintan Shah0https://orcid.org/0000-0002-6484-3803Pedro Amaro1https://orcid.org/0000-0002-5257-6728Filipe Grilo2https://orcid.org/0000-0001-5777-1891Ming Feng Gu3https://orcid.org/0000-0001-9136-8449Liyi Gu4https://orcid.org/0000-0001-9911-7038José Paulo Santos5https://orcid.org/0000-0002-5890-0971F. Scott Porter6https://orcid.org/0000-0002-6374-1119Thomas Pfeifer7https://orcid.org/0000-0002-5312-3747Maurice A. Leutenegger8https://orcid.org/0000-0002-3331-7595José R. Crespo López-Urrutia9https://orcid.org/0000-0002-2937-8037NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA; Max-Planck-Institut für Kernphysik , Saupfercheckweg 1, 69117 Heidelberg, Germany; Department of Physics and Astronomy, Johns Hopkins University , Baltimore, MD 21218, USALaboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon , 2829-516 Caparica, PortugalLaboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon , 2829-516 Caparica, PortugalSpace Science Laboratory, University of California , Berkeley, CA 94720, USASRON Netherlands Institute for Space Research , Niels Bohrweg 4, 2333 CA Leiden, The Netherlands; Leiden Observatory, Leiden University , P.O. Box 9513, 2300 RA Leiden, The NetherlandsLaboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon , 2829-516 Caparica, PortugalNASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USAMax-Planck-Institut für Kernphysik , Saupfercheckweg 1, 69117 Heidelberg, GermanyNASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USAMax-Planck-Institut für Kernphysik , Saupfercheckweg 1, 69117 Heidelberg, GermanyWe report on comprehensive laboratory studies of the K-shell dielectronic recombination resonances of Fe xxv – xxi ions that prominently contribute to the hard X-ray spectrum of hot astrophysical plasmas. By scanning a monoenergetic electron beam to resonantly excite trapped Fe ions in an electron beam ion trap and achieving a high electron–ion collision energy resolution of ∼7 eV, we resolve their respective KL n satellites up to ${n}^{{\prime} }=11$ . By normalization to known radiative recombination cross sections, we also determine their excitation cross sections and that of the continuum with uncertainties below 15% and verify our results with an independent normalization based on previous measurements. Our experimental data excellently confirm the accuracy and suitability of distorted-wave calculations obtained with the Flexible Atomic Code for modeling astrophysical and fusion plasmas.https://doi.org/10.3847/1538-4357/addabaLaboratory astrophysicsAtomic physicsAtomic data benchmarkingExperimental techniquesX-ray astronomyDielectronic recombination |
| spellingShingle | Chintan Shah Pedro Amaro Filipe Grilo Ming Feng Gu Liyi Gu José Paulo Santos F. Scott Porter Thomas Pfeifer Maurice A. Leutenegger José R. Crespo López-Urrutia Comprehensive Laboratory Benchmark of K-shell Dielectronic Satellites of Fe xxv–xxi Ions The Astrophysical Journal Laboratory astrophysics Atomic physics Atomic data benchmarking Experimental techniques X-ray astronomy Dielectronic recombination |
| title | Comprehensive Laboratory Benchmark of K-shell Dielectronic Satellites of Fe xxv–xxi Ions |
| title_full | Comprehensive Laboratory Benchmark of K-shell Dielectronic Satellites of Fe xxv–xxi Ions |
| title_fullStr | Comprehensive Laboratory Benchmark of K-shell Dielectronic Satellites of Fe xxv–xxi Ions |
| title_full_unstemmed | Comprehensive Laboratory Benchmark of K-shell Dielectronic Satellites of Fe xxv–xxi Ions |
| title_short | Comprehensive Laboratory Benchmark of K-shell Dielectronic Satellites of Fe xxv–xxi Ions |
| title_sort | comprehensive laboratory benchmark of k shell dielectronic satellites of fe xxv xxi ions |
| topic | Laboratory astrophysics Atomic physics Atomic data benchmarking Experimental techniques X-ray astronomy Dielectronic recombination |
| url | https://doi.org/10.3847/1538-4357/addaba |
| work_keys_str_mv | AT chintanshah comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT pedroamaro comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT filipegrilo comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT mingfenggu comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT liyigu comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT josepaulosantos comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT fscottporter comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT thomaspfeifer comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT mauricealeutenegger comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions AT josercrespolopezurrutia comprehensivelaboratorybenchmarkofkshelldielectronicsatellitesoffexxvxxiions |