{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T22:08:17Z","timestamp":1759183697948},"reference-count":38,"publisher":"AIP Publishing","issue":"9","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2000,11,1]]},"abstract":"<jats:p>Experimental absolute W values are presented in Ne\u2013Xe mixtures for 5.9 keV x rays with a standard uncertainty lower than 1%. The measured W values range from 23.9 to 22.1 eV for mixtures in the 10% Xe\u201390% Ne to 80% Xe\u201320% Ne concentration range, respectively. The measurements were performed using a recent technique based on the measurement of the primary ionization charge produced by a certain number of x-ray photons absorbed in the gas. We experimentally investigated the dependence of the W value in Ne\u2013Xe mixtures with the Ne or Xe concentration, showing the influence of Penning effects. The discrepancies between our W values and data obtained with other methods for W-value determination are discussed. Along with the experimental measurements, an analytical model for the W value in binary mixtures was implemented, taking into consideration the most important energy transfer mechanisms which influence the ionization yield formation, namely the Penning interactions. The experimental and the analytical model results are compared and discussed.<\/jats:p>","DOI":"10.1063\/1.1290710","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T12:41:43Z","timestamp":1027687303000},"page":"5426-5432","update-policy":"http:\/\/dx.doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":5,"title":["Absolute <i>W<\/i> value measurements for 5.9 keV x rays in Ne\u2013Xe mixtures at atmospheric pressures"],"prefix":"10.1063","volume":"88","author":[{"given":"F. L. R.","family":"Vinagre","sequence":"first","affiliation":[{"name":"Departamento de F\u00edsica, FCTUC, Universidade de Coimbra, P-3004-516 Coimbra, Portugal"}]},{"given":"C. A. 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