Atomic Weight of Silver

Crouch, Edmund A. C.; Preece, E. R.; Swainbank, I. G.; Turnbull, A.H.

doi:10.1038/184358a0

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Each sample was analyzed twice with three ratios observed at 10 min intervals for each sample. Cobalt samples (1), (2), and (3) of table 2 were analyzed with the ratio recording measuring circuit and all other samples were analyzed by mass scanning.…”

Section: Resultsmentioning

confidence: 99%

“…They reported a staListically sig nifica nt variation in the ratio for one sample from Cobalt, On tario compared with six samples from other locali ties . Previous investigaLions of a possibl e variation in the isotop e ratio of naLural silver h ave been limited to processed bulk silver [2] or to a ver:\T few min eral samples . I-less, Marshall, and Drey [3] h ave reported no variation am ong four samples of ter restri al silver a nd one sam ple of Toluca Troilite.…”

Section: Introductionmentioning

confidence: 99%

“…I sotope ratios were m easured both by comparison of Lbe AglO7 and AglO9 ion currents collected alternately on the Faraday collector and by a r atio-record m ethod usin g an expanded scale recorder . 2 All ratio measurements of the calibration mixtures and the comm er cial and natural samples were obtained under standardized cond itions of essentially constant sample size and nominal ion currents of 1 X 10-11 am p. The latter was controlled by adjustment of the filamen t temperatures. Observations were made on a s trict t ime schedule as illu strated in figure 1.…”

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confidence: 99%

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Absolute isotopic abundance of terrestrial silver

Shields¹,

Garner²,

Dibeler³

1962

J. RES. NATL. BUR. STAN. SECT. A.

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I sotopi c ab unda nce ratios a re reported for a commercial silver ni t rate, 13 sa mples of native silver, a nd 11 silver min erals of various co mpositions an d fr om widely dis tributed d eposits . Coll ateral m easureme nts of known mi xt ures of n early pure sil vel' isotopes permit th e d etermination of a bsolu te ab undance rat ios. Native sil ver from Cobalt , Ontario, prev iously r eported as ex hibi t in g s tatist ically s ig nifi can t vari ation, is re-examin ed. Additional meas ure ments a re repo rted for samples from t h e sa me nugget a nd from t he same region. Except fo r t he original observation, no sign ifi cant variation from normal a bundance is obser ved for a ny of t h e sa mples. Th e AgI 07(AglOO ratio obtain ed from p oolin g t h e data is 1.07597 wi t h a 95 p erce nt co nfid ence limi t of ± 0.00055 for t he effect of ra ndom erro rs a nd a total uncer tain ty of ± 0.001 35 when an allowance for the possible effects of known sour ces of sys tematic error is in cluded.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Absolute isotopic abundance of terrestrial silver

Shields¹,

Garner²,

Dibeler³

1962

J. RES. NATL. BUR. STAN. SECT. A.

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show abstract

“…Gvozdanovic (191) develops a method of isotopic analysis of magnesium, zinc, and cadmium, in which the metallic vapors are obtained by reduction of the oxides in a source furnace. By surface ionization Crouch et al (90) find the atomic weight of silver to be 107.868. The isotopes of dysprosium obtained by deep splitting of tantalum are investigated (107).…”

Section: Precise Mass Measurement a N D Isotope Abundancementioning

confidence: 99%