Obtaining a history of the flux of cosmic rays using in situ cosmogenic 14C trapped in polar ice

Simple item page
dc.contributor.authorBenZvi, Sen_AU
dc.contributor.authorPetrenko, VVen_AU
dc.contributor.authorHmiel, Ben_AU
dc.contributor.authorDyonisius, MNen_AU
dc.contributor.authorSmith, AMen_AU
dc.contributor.authorYang, Ben_AU
dc.contributor.authorHua, Qen_AU
dc.date.accessioned2022-05-05T22:20:06Zen_AU
dc.date.available2022-05-05T22:20:06Zen_AU
dc.date.issued2019-07-24en_AU
dc.date.statistics2022-05-04en_AU
dc.description.abstractCarbon-14 (14C) is produced in the atmosphere when neutrons from cosmic-ray air showers are captured by 14N nuclei. Atmospheric 14C becomes trapped in air bubbles in polar ice as compacted snow (firn) transforms into ice. 14C is also produced in situ in ice grains by penetrating cosmic-ray neutrons and muons. Recent ice core measurements indicate that in the 14CO phase, the 14C is dominated by the in situ cosmogenic component at most ice coring sites. Thus, it should be possible to use ice-bound 14CO to reconstruct the historical flux of cosmic rays at Earth, without the transport and deposition uncertainties associated with 10Be or the carbon cycle uncertainties affecting atmospheric 14CO2. The measurements will be sensitive to the cosmic-ray flux above the energy range most affected by solar modulation. We present estimates of the expected sensitivity of 14CO in ice cores to the historical flux of Galactic cosmic rays, based on recent studies of 14CO in polar ice. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)en_AU
dc.description.urihttps://doi.org/10.22323/1.358.1056en_AU
dc.identifier.citationBenZvi, S., Petrenko, V. V., Hmiel, B., Dyonisius, M., Smith, A. M., Yang, B., & Hua, Q. (2019). Obtaining a history of the flux of cosmic rays using in situ cosmogenic 14C trapped in polar ice. Paper presented at the 36th International Cosmic Ray Conference: ICRC2019, Madison, Wisconsin, U.S.A., July 24th - August 1st, 2019. In arXiv:1909.07994 [astro-ph.HE]. doi:10.48550/arXiv.1909.07994en_AU
dc.identifier.conferenceenddate1 August 2019en_AU
dc.identifier.conferencename36th International Cosmic Ray Conference: ICRC2019en_AU
dc.identifier.conferenceplaceMadison, Wisconsin, U.S.Aen_AU
dc.identifier.conferencestartdate24 July 2019en_AU
dc.identifier.journaltitlearXiven_AU
dc.identifier.urihttps://doi.org/10.48550/arXiv.1909.07994en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13127en_AU
dc.language.isoenen_AU
dc.publisherInternational Union of Pure and Applied Physics (IUPAP)en_AU
dc.subjectAtmospheric circulationen_AU
dc.subjectCarbon 14en_AU
dc.subjectCosmic ray fluxen_AU
dc.subjectCosmologyen_AU
dc.subjectIceen_AU
dc.subjectEarth coreen_AU
dc.titleObtaining a history of the flux of cosmic rays using in situ cosmogenic 14C trapped in polar iceen_AU
dc.typeConference Paperen_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
1909.07994.pdf
Size:
1.3 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications