Response Functions of a Neutron Monitor from the 2023-24 Latitude Survey Aboard the Araon Icebreaker
A latitude survey was conducted in 2023–24 using the Changvan neutron monitor aboard the South Korean icebreaker "Araon" to investigate cosmic ray modulation over a broad range of geomagnetic cutoff rigidities. The semi-leaded configuration, comprising both leaded and unleaded proportional counters, enabled the extraction of empirical response functions for each tube. Fits to the Dorman function revealed shielding-dependent differences in rigidity sensitivity, including variations in spectral slope and cutoff sharpness. The results demonstrate the viability of compact neutron monitors for characterizing cosmic ray responses under varying geomagnetic and modulation conditions.
Authors
- Achara Seripienlert (ORCID: https://orcid.org/0000-0002-3764-8949)
- Waraporn Nuntiyakul (ORCID: https://orcid.org/0000-0002-1664-5845)
- Suyeon Oh (ORCID: https://orcid.org/0000-0002-6786-620X)
- Sidarat Khamphakdee (ORCID: https://orcid.org/0009-0008-8182-1180)
- D. Ruffolo (ORCID: https://orcid.org/0000-0003-3414-9666)
- Siramas Komonjinda (ORCID: https://orcid.org/0000-0001-7987-017X)
- Tatphicha Promfu (ORCID: https://orcid.org/0000-0002-0297-1172)
- P. A. Evenson (ORCID: https://orcid.org/0000-0001-7929-810X)
- A. Sáiz (ORCID: https://orcid.org/0000-0001-7771-4341)
- Jongdae Sohn (ORCID: https://orcid.org/0000-0002-6572-622X)
- Audcharapon Pagwhan
Publication Details
- Published
- 2025-09-24
- DOI
- https://doi.org/10.22323/1.501.1348
- Primary Topic
- Nuclear Physics and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Chiang Mai University
- Korea Astronomy and Space Science Institute
- National Science and Technology Development Agency
- Korea Polar Research Institute
- National Research Council of Thailand