Fumio Yamasaki

Biographic Data

ID5597115
NAMEFumio Yamasaki
GIVEN NAMESFumio
FAMILY NAMEYamasaki
SIGNATUREYAMASAKI F
VERIFIEDNo
TOTAL WORKS10
TOTAL CITATIONS24
AUTHOR COUNT10
EDITOR COUNT0
FIRST PUBLICATION YEAR1964
LATEST PUBLICATION YEAR1994
H-INDEX3

  • Laboratories 1,2

    Open AccessHector Ac, Pabellbn Panarello et al.ARTICLERadiocarbon1994

    This material was digitized as part of a cooperative project between Radiocarbon and the University of Arizona Libraries

  • Riken Natural Radiocarbon Measurements IX

    Open AccessFumio Yamasaki, Chikako Hamada et al.ARTICLERadiocarbon1977Cited by: 4References: 11

    The 14 C dates given below are continued from our previous list (R, 1974, v 16, p 331-357), and results obtained mainly during 1972-73 are described. A 2.7L stainless steel counter and a 3.3L copper counter are used as previously, yielding background counting rates of 3.9 and 5.6cpm, respectively, when filled with dead CO 2 at ca 1.7atm. Dates have been calculated on the basis of the 14 C half-life of 5568 ± 30 yr and 95% of NBS oxalic acid is mo…

  • Riken Natural Radiocarbon Measurements VIII

    Open AccessFumio Yamasaki, Chikako Hamada et al.ARTICLERadiocarbon1974Cited by: 1References: 5

    The 14 C dates given below are continued from our previous list (R, 1972, v 14, p 223–238), and results obtained mainly during 1971–2 are described. A 2.7L stainless steel counter and a 3.3L copper counter are used as previously, yielding background counting rates of 6.9 and 6.0 cpm, respectively, when filled with dead CO 2 at ca 1.8 atm. Dates have been calculated on the basis of the 14 C half-life of 5568 yr and 95% of NBS oxalic acid is modern…

  • Riken Natural Radiocarbon Measurements VII

    Open AccessFumio Yamasaki, Chikako Hamada et al.ARTICLERadiocarbon1972Cited by: 4References: 3

    The C 14 dates given below are continued from our previous list (R., 1970, v. 12, p. 559–576), and results obtained mainly during 1970 are described. A 2.7 L stainless steel counter and a 3.3 L copper counter are used, yielding background counting rates of 5.5 and 8.5 cpm, respectively, when filled with dead CO 2 at ca. 1.8 atm. Dates have been calculated on the basis of the C 14 half-life of 5568 yr and 95% of NBS oxalic acid as modern standard

  • Riken Natural Radiocarbon Measurements VI

    Open AccessFumio Yamasaki, Tatsuji Hamada et al.ARTICLERadiocarbon1970Cited by: 2References: 3

    The C 14 dates given below are a continuation of the work presented in our previous list (Radiocarbon, 1969, v. 11, p. 451-462), and results obtained mainly during 1969 are described. A new 3.3 L copper counter was put into routine operation besides the 2.7 L stainless steel counter employed heretofore, yielding background counting rates of 8.5 and 5.5 cpm, respectively, when filled with dead CO 2 at ca. 1.8 atm

  • Riken Natural Radiocarbon Measurements V

    Open AccessFumio Yamasaki, Tatsuji Hamada et al.ARTICLERadiocarbon1969Cited by: 1References: 5

    The C 14 dates given below are a continuation of the work presented in our previous list (Radiocarbon, 1968, v. 10, p. 333-345), and have been obtained by counting CO 2 at ca. 2 atm pressure in a 2.7 L stainless steel counter. Results obtained mainly during 1968 are described. Dates have been calculated on the basis of the C 14 half-life of 5568 yr and 95% of NBS oxalic acid as modern standard

  • Riken Natural Radiocarbon Measurements IV

    Open AccessFumio Yamasaki, Tatsuji Hamada et al.ARTICLERadiocarbon1968Cited by: 3References: 3

    The C 14 dates given below are a continuation of the work presented in our previous list (RIKEN III), and have been obtained by counting CO 2 at ca. 2 atm pressure in a 2.7 L stainless steel counter. Results obtained mainly during 1967 are described. Shell samples were treated with 1% HCl to remove the outer 10%. Calcareous deposits on the surface, when observed, were removed by mechanical means. Dates were calculated on the basis of the C 14 hal…

  • Riken Natural Radiocarbon Measurements III

    Open AccessFumio Yamasaki, Tatsuji Hamada et al.ARTICLERadiocarbon1967Cited by: 3

    The C 14 dates given below are a continuation of the work presented in our previous list (RIKEN II), and have been obtained by counting CO 2 at ca. 2 atm pressure in a 2.7 L stainless steel counter. Results obtained during 1966 are described

  • Riken Natural Radiocarbon Measurements II

    Open AccessFumio Yamasaki, Tatsuji Hamada et al.ARTICLERadiocarbon1966Cited by: 5References: 1

    The C 14 dates given below are a continuation of the work presented in our first list (RIKEN I), and have been obtained by counting CO 2 at about 2 atm pressure in a 2.7-L stainless steel counter. In this article, results obtained during 1964-65 are described. Shell samples were treated with 1% HCl to remove the outer 10%. Calcareous deposits on the surface, when observed, were removed by mechanical means

  • Riken Natural Radiocarbon Measurements I

    Open AccessFumio Yamasaki, Tatsuji Hamada et al.ARTICLERadiocarbon1964Cited by: 1

    Natural C 14 measurements at the Institute of Physical and Chemical Research (RIKEN) became routine in 1962. The counters presently used are made of stainless steel with a volume of about 2.7 L. They are surrounded by 2.5 cm of pure lead, a ring of 22 propane gas-flow anticoincidence counters, about 10 cm of boric acid and 20 cm of iron. When filled with dead CO 2 up to 2 atm, they gave a background counting rate of about 9 cpm (Hamada, 1960). In…