{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T07:00:07Z","timestamp":1785135607098,"version":"3.55.0"},"reference-count":28,"publisher":"IOP Publishing","issue":"3","license":[{"start":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T00:00:00Z","timestamp":1785110400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T00:00:00Z","timestamp":1785110400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["J. Radiol. Prot."],"published-print":{"date-parts":[[2026,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Tissue-equivalent proportional counter (TEPC) filled with tissue-equivalent propane (TEP) gas is the standard choice for microdosimetric studies. However, pure propane (PP) gas serves as an effective alternative for long-duration space missions due to its superior compositional stability. This study addresses the applicability of PP gas for the microdosimetry of space radiation using the FLUKA Monte Carlo code. Towards this goal, microdosimetric distributions and total energy deposited in the TEPC cavity filled with PP and TEP gases are calculated at 1\n                    <jats:italic>\u03bc<\/jats:italic>\n                    m site size, for GCR ions, trapped protons (TPs) and albedo neutrons present in the lower Earth orbit (LEO). The density scaling factor (\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:mrow>\n                            <mml:msub>\n                              <mml:mi>f<\/mml:mi>\n                              <mml:mi>\u03c1<\/mml:mi>\n                            <\/mml:msub>\n                          <\/mml:mrow>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    ) is calculated using the calculated energy deposited in the gas cavities. The study reveals that the calculated value of\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:mrow>\n                            <mml:msub>\n                              <mml:mi>f<\/mml:mi>\n                              <mml:mi>\u03c1<\/mml:mi>\n                            <\/mml:msub>\n                          <\/mml:mrow>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    for GCR ions and TPs is about 0.93 and that for albedo neutron is 0.88.\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:mrow>\n                            <mml:msub>\n                              <mml:mi>f<\/mml:mi>\n                              <mml:mi>\u03c1<\/mml:mi>\n                            <\/mml:msub>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mtext>\u2009<\/mml:mtext>\n                          <\/mml:mrow>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    is about 0.93 for the combined radiation environment at LEO. When\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                          <mml:mrow>\n                            <mml:msub>\n                              <mml:mi>f<\/mml:mi>\n                              <mml:mi>\u03c1<\/mml:mi>\n                            <\/mml:msub>\n                          <\/mml:mrow>\n                        <\/mml:mrow>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    is applied on the density of PP, the resultant microdosimetric distributions and mean quality factors are comparable to those for TEP.\n                  <\/jats:p>","DOI":"10.1088\/1361-6498\/ae8910","type":"journal-article","created":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T22:48:21Z","timestamp":1783723701000},"page":"033501","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["FLUKA investigations of the applicability of pure propane gas for TEPC-based microdosimetry of space radiation in low Earth orbit"],"prefix":"10.1088","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0071-5594","authenticated-orcid":true,"given":"Arghya","family":"Chattaraj","sequence":"first","affiliation":[{"name":"Medical Group,Bhabha Atomic Research Centre"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2798-4516","authenticated-orcid":true,"given":"T Palani","family":"Selvam","sequence":"additional","affiliation":[{"name":"Medical Group,Bhabha Atomic Research Centre"},{"name":"Homi Bhabha National Institute"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2026,7,27]]},"reference":[{"key":"jrpae8910bib1","doi-asserted-by":"publisher","first-page":"1302","DOI":"10.1016\/j.asr.2003.03.045","type":"journal-article","article-title":"The FLUKA code for space applications: recent developments","volume":"34","author":"Andersen","year":"2004","journal-title":"Adv. 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Published on behalf of the Society for Radiological Protection by IOP Publishing Ltd","name":"copyright_information","label":"Copyright Information"},{"value":"2026-02-23","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2026-07-10","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2026-07-27","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}