Riparo Arma Di Nasino Series
University of Rome Carbon-14 Dates VI Item Type Article; text Authors Alessio, M.; Bella, F.; Cortesi, C.; Graziadei, B. Citation Alessio, M., Bella, F., Cortesi, C., & Graziadei, B. (1968). University of Rome carbon-14 dates VI. Radiocarbon, 10(2), 350-364. DOI 10.1017/S003382220001095X Publisher American Journal of Science Journal Radiocarbon Rights Copyright © The American Journal of Science Download date 06/10/2021 12:06:07 Item License http://rightsstatements.org/vocab/InC/1.0/ Version Final published version Link to Item http://hdl.handle.net/10150/651722 [RADIOCARBON, VOL. 10, No. 2, 1968, P. 350-364] UNIVERSITY OF ROME CARBON-14 DATES VI M. ALESSIO, F. BELLA Istituto di Fisica, University di Roma Istituto Nazionale di Fisica Nucleare, Sezione di Roma C. CORTESI and B. GRAZIADEI Istituto di Geochimica, University di Roma The list includes age measurements carried out from December 1966 and November 1967. All samples both of archaeologic and geologic in- terest are drawn from Italian territory. Chemical techniques have remained unchanged (Bella and Cortesi, 1960). Two counters have been used for dating: the 1st, of 1.5 L, already described (Bella and Cortesi, 1960; Alessio, Bella, and Cortesi, 1964), the 2nd, of 1 L, recently assembled, is identical to the previous 1 L counter (Alessio, Bella, and Cortesi, 1964), its anticoincidence system was realized by a plastic scintillator and photomultipliers. Background 6.15 + 0.08 counts/min, counting rate for modern carbon 24.49 + 0.15 counts/min. Higher efficiency of electronic recording was obtained by reducing pulse length and by a few other changes.
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