Assessment of neutrons from secondary cosmic rays at mountain altitudes – Geant4 simulations of environmental parameters including soil moisture and snow cover

Autor: Thomas Brall, V. Mares, Rolf Bütikofer, Werner Rühm

Publikováno v: The Cryosphere, Vol 15, Pp 4769-4780 (2021)
Cryosphere 15, 4769-4780 (2021)

Ground based measurements of neutrons from secondary cosmic rays are affected by environmental parameters, particularly hydrogen content in soil. To investigate the impact of these parameters, Geant4 Monte Carlo simulations were carried out. In a pre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::472f581861ca122bf66cd77bd1252d58
https://tc.copernicus.org/articles/15/4769/2021/tc-15-4769-2021.pdf

SEP spectra derived from neutron monitor data and from EPHIN space detector data during recent GLEs and sub-GLEs

Autor: Patrick Kühl, Athanasios Papaioannou, Rolf Bütikofer

Publikováno v: NMDB@Home 2020

The Electron Proton Helium Instrument (EPHIN) aboard the Solar Heliospheric Observatory (SOHO) observed several SEP events with protons accelerated to energies E>500 MeV, whereas no neutron monitor (NM) of the worldwide network showed a significant i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0d092fc91f518636655f11e345fe00f3
https://doi.org/10.38072/2748-3150/p11

Assessment of secondary neutrons from galactic cosmic rays at mountain altitudes-Geant4 simulations and ground-based measurements of neutron energy spectra

Autor: V. Mares, Rolf Bütikofer, T. Brall, W. Rühm

Publikováno v: Radiat. Meas. 144:106592 (2021)

In this study, the Geant4 Monte Carlo toolkit was used to simulate energy spectra of neutrons from secondary cosmic radiation at mountain altitudes for the Environmental Research Station "Schneefernerhaus" at the Zugspitze mountain, Germany (2660 m a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c8ee438568b4f6c5eab9c240910e677
https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=62363

Inversion Methodology of Ground Level Enhancements

Autor: Konstantin Herbst, Rami Vainio, Johannes Labrenz, Rolf Bütikofer, Bernd Heber, Neus Agueda, Dennis Galsdorf, Patrick Kühl

Publikováno v: Astrophysics and Space Science Library ISBN: 9783319600505

While it is believed that the acceleration of Solar Energetic Particles (SEPs) is powered by the release of magnetic energy at the Sun, the nature, and location of the acceleration are uncertain, i.e. the origin of the highest energy particles is hea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ebfde662457b9fea29499ded0501ac8
https://doi.org/10.1007/978-3-319-60051-2_10

Radiation doses along selected flight profiles during two extreme solar cosmic ray events

Autor: Erwin Flückiger, Rolf Bütikofer

Publikováno v: Flückiger, E.; Bütikofer, R. (2011). Radiation doses along selected flight profiles during two extreme solar cosmic ray events. Astrophysics and Space Sciences Transactions ASTRA, 7(2), pp. 105-109. Göttingen: Copernicus Publications 10.5194/astra-7-105-2011

The radiation dose rates at flight altitudes may be hazardously increased during solar cosmic ray events. Within the scope of this paper we investigate the total accumulated radiation doses, i.e. the contribution of galactic and solar cosmic rays, du

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70c60a1612189c32b0495c577414878a
https://doi.org/10.5194/astra-7-105-2011