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This intensity ratio increases rapidly from Mg to Ca but, in the 3d elements region, the increase becomes slower. This is related to the intensity of the K\u03b2 line involving valence electrons. The slow increase of this ratio in the 3d elements region is thought to be due to the correlation between 3d and 4s electrons. Moreover, the chemical shifts, FWHM, asymmetry indices, and K\u03b2\/K\u03b1 intensity ratios of the Cr compounds, due to different valences, were also investigated using the same double-crystal X-ray spectrometer. The chemical effects were clearly observed, and the K\u03b2\/K\u03b1 intensity ratio was found to be compound-dependent for Cr.<\/jats:p>","DOI":"10.3390\/ijms24065570","type":"journal-article","created":{"date-parts":[[2023,3,15]],"date-time":"2023-03-15T05:53:44Z","timestamp":1678859624000},"page":"5570","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Intensity Ratio of K\u03b2\/K\u03b1 in Selected Elements from Mg to Cu, and the Chemical Effects of Cr K\u03b11,2 Diagram Lines and Cr K\u03b2\/K\u03b1 Intensity Ratio in Cr Compounds"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9127-1815","authenticated-orcid":false,"given":"Yoshiaki","family":"Ito","sequence":"first","affiliation":[{"name":"Laboratory of Atomic and Molecular Physics, ICR, Kyoto University, Gokasho, Uji 611-0011, Japan"}]},{"given":"Tatsunori","family":"Tochio","sequence":"additional","affiliation":[{"name":"1-24-14 Inadera, Amagasaki 661-0981, Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8864-3734","authenticated-orcid":false,"given":"Michiru","family":"Yamashita","sequence":"additional","affiliation":[{"name":"Hyogo Prefectural Institute of Technology (HIT), 3-1-12 Yukihira, Suma-ku, Kobe 654-0037, Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0252-349X","authenticated-orcid":false,"given":"Sei","family":"Fukushima","sequence":"additional","affiliation":[{"name":"Kobe Material Testing Laboratory Co., Ltd., 47-13 Nijima, Harima-cho, Kako-gun 675-0155, Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5931-5128","authenticated-orcid":false,"given":"Takashi","family":"Shoji","sequence":"additional","affiliation":[{"name":"Rigaku Corporation, 14-8 Akaoji-cho, Takatsuki 569-1146, Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6663-7309","authenticated-orcid":false,"given":"Katarzyna","family":"S\u0142abkowska","sequence":"additional","affiliation":[{"name":"Faculty of Chemistry, Nicolaus Copernicus University in Toru\u0144, Gagarina 7, 87-100 Toru\u0144, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6595-1139","authenticated-orcid":false,"given":"\u0141ukasz","family":"Syrocki","sequence":"additional","affiliation":[{"name":"Institute of Plasma Physics and Laser Microfusion, Hery 23, 01-497 Warsaw, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8228-6262","authenticated-orcid":false,"given":"Marek","family":"Polasik","sequence":"additional","affiliation":[{"name":"Faculty of Chemistry, Nicolaus Copernicus University in Toru\u0144, Gagarina 7, 87-100 Toru\u0144, Poland"}]},{"given":"Jana Pade\u017enik","family":"Gomilsek","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3797-3880","authenticated-orcid":false,"given":"Jos\u00e9 Pires","family":"Marques","sequence":"additional","affiliation":[{"name":"LIP\u2014Laborat\u00f3rio de Instrumenta\u00e7\u00e3o e F\u00edsica Experimental de Part\u00edculas, Av. 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