View Item 

Show simple item record

Relative Quenching Cross Sections in the Reaction of Hg(63P1) Atoms with Isotopic N2O Molecules
dc.contributor.authorHoffman, Morton Z.en_US
dc.contributor.authorBernstein, Richard B.en_US
dc.date.accessioned2010-05-06T21:16:12Z
dc.date.available2010-05-06T21:16:12Z
dc.date.issued1960-08en_US
dc.identifier.citationHoffman, Morton Z.; Bernstein, Richard B. (1960). "Relative Quenching Cross Sections in the Reaction of Hg(63P1) Atoms with Isotopic N2O Molecules." The Journal of Chemical Physics 33(2): 526-529. <http://hdl.handle.net/2027.42/69865>en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/69865
dc.description.abstractThe N14/N15 and O16/O18 isotope effects in the Hg(63P1)‐photosensitized decomposition of nitrous oxide have been measured. Observed isotopic fractionation factors, S0 (interpreted in terms of ratios of rate constants for quenching by N14N14O16 vs N15N14O16, N14N15O16, and N14N14O18), are related to the ratio of isotopic quenching cross sections by the equation Q/Q*=S0(μ/μ*)☒, where μ and μ* are the collisional reduced masses for Hg and the light and heavy isotopic molecules, respectively. The quenching cross section ratio for N142O16/N142O18 was unity within the experimental uncertainty (±0.1%). The ratios for N14N14O16/N15N14O16 and N14N14O16/N14N15O16 differed from unity by +0.98 and +0.44%, respectively. The order of the quenching cross sections for the isotopic nitrous oxide molecules is thus: N15N14O16<N14N15O16<14N14O18≅N14N14O16. The implications of the present observations are briefly discussed.en_US
dc.format.extent3102 bytes
dc.format.extent300427 bytes
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.publisherThe American Institute of Physicsen_US
dc.rights© The American Institute of Physicsen_US
dc.titleRelative Quenching Cross Sections in the Reaction of Hg(63P1) Atoms with Isotopic N2O Moleculesen_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelPhysicsen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Chemistry, The University of Michigan, Ann Arbor, Michiganen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/69865/2/JCPSA6-33-2-526-1.pdf
dc.identifier.doi10.1063/1.1731178en_US
dc.identifier.sourceThe Journal of Chemical Physicsen_US
dc.identifier.citedreferenceM. W. Zemansky, Phys. Rev. 36, 919 (1930).en_US
dc.identifier.citedreferenceFor a review of the quenching of Hg‐resonance radiation, see (a) A. C. G. Mitchell and M. W. Zemansky, Resonance Radiation and Excited Atoms (Cambridge University Press, Cambridge, England, 1934); (b) W. A. Noyes, Jr., and P. A. Leighton, The Photochemistry of Gases (Reinhold Publishing Corporation, New York, 1941); (c) K. J. Laidler, The Chemical Kinetics of Excited States (Clarendon Press, Oxford, England, 1955).en_US
dc.identifier.citedreferenceW. A. Noyes, Jr., J. Am. Chem. Soc. 53, 514 (1931).en_US
dc.identifier.citedreferenceB. de B. Darwent and F. G. Hurtubise, J. Chem. Phys. 20, 1684 (1952).en_US
dc.identifier.citedreferenceFootnote reference 2(c), p. 97.en_US
dc.identifier.citedreferenceJ. E. Cline and G. S. Forbes, J. Am. Chem. Soc. 63, 2152 (1941).en_US
dc.identifier.citedreferenceR. J. Cvetanović, J. Chem. Phys. 23, 1208 (1955).en_US
dc.identifier.citedreferenceR. J. Cvetanović, Can. J. Chem. 33, 1684 (1955).en_US
dc.identifier.citedreferenceR. J. Cvetanović, Can. J. Chem. 34, 775 (1956).en_US
dc.identifier.citedreferenceR. J. Cvetanović and L. C. Doyle, Can. J. Chem. 35, 605 (1957).en_US
dc.identifier.citedreferenceFootnote reference 2(c), p. 106.en_US
dc.identifier.citedreferenceM. G. Evans, J. Chem. Phys. 2, 445 (1934).en_US
dc.identifier.citedreferenceH. W. Melville, J. L. Bolland, and H. L. Roxburgh, Proc. Roy. Soc. (London) A160, 406 (1937).en_US
dc.identifier.citedreferenceH. Hoge, J. Research Natl. Bur. Standards 34, 281 (1945).en_US
dc.identifier.citedreferenceG. Herzberg, Infrared and Raman Spectra (D. Van Nostrand Company, Inc., Princeton, New Jersey, 1951), p. 277.en_US
dc.identifier.citedreferenceL. Friedman and J. Bigeleisen, J. Chem. Phys. 18, 1325 (1950).en_US
dc.identifier.citedreferenceIn the case of NN15O,NN15O, for example, the 4.3 at. %N15%N15 would be distributed as follows, in terms of all the molecules: N15NO  =  0.4%,N15NO=0.4%, NN15O  =  3.9%,NN15O=3.9%, and NNO  =  95.7%.NNO=95.7%.en_US
dc.identifier.citedreferenceAdapted from the design of M. M. Benarie, I. Amariglio, and M. Mokady, J. Sci. Instr. 35, 70 (1958).en_US
dc.identifier.citedreferenceR. J. Cvetanović, J. Chem. Phys. 23, 1203 (1955).en_US
dc.identifier.citedreferenceTypical quantities of H2OH2O obtained were in the range of 6.5–15 mg.6.5–15mg.en_US
dc.identifier.citedreferenceH. A. Taylor and N. Zwiebel, J. Chem. Phys. 14, 539 (1946).en_US
dc.identifier.citedreferenceH. Friedman, R. B. Bernstein, and H. E. Gunning, J. Chem. Phys. 23, 109 (1955).en_US
dc.identifier.citedreferenceM. Cohn and H. C. Urey, J. Am. Chem. Soc. 60, 679 (1938).en_US
dc.identifier.citedreferenceR. B. Bernstein, J. Chem. Phys. 23, 1797 (1955).en_US
dc.identifier.citedreferenceI. Dostrovsky and F. S. Klein, Anal. Chem. 24, 414 (1952).en_US
dc.identifier.citedreferenceG. B. Kistiakowsky and G. G. Volpi, J. Chem. Phys. 27, 1141 (1957).en_US
dc.identifier.citedreferenceThe symbols N and N∗ represent N14N14 and N15,N15, respectively, while O and O∗ refer, respectively, to O16O16 and O18.O18.en_US
dc.identifier.citedreferenceThe value of Y for sample A is: Y  =  (0.004)/(0.004+0.039)  =  0.093;Y=(0.004)∕(0.004+0.039)=0.093; for sample B, Y  =  (0.039)/(0.039+0.004)  =  0.907.Y=(0.039)∕(0.039+0.004)=0.907.en_US
dc.identifier.citedreferenceM. Zelikoff, K. Watanabe, and E. C. Y. Inn, J. Chem. Phys. 21, 1643 (1953).en_US
dc.identifier.citedreferenceW. S. Richardson and E. B. Wilson, Jr., J. Chem. Phys. 18, 694 (1950).en_US
dc.identifier.citedreferenceJ. Bigeleisen and L. Friedman, J. Chem. Phys. 18, 1656 (1950).en_US
dc.identifier.citedreferenceG. M. Begun and W. H. Fletcher, J. Chem. Phys. 28, 414 (1958).en_US
dc.identifier.citedreferenceA. A. Gordus and R. B. Bernstein, J. Chem. Phys. 30, 973 (1959).en_US
dc.owningcollnamePhysics, Department of


Files in this item

Name:
JCPSA6-33-2-526-1.pdf
Size:
293.3KB
Format:
PDF
View/Open

Show simple item record

Remediation of Harmful Language

The University of Michigan Library aims to describe its collections in a way that respects the people and communities who create, use, and are represented in them. We encourage you to Contact Us anonymously if you encounter harmful or problematic language in catalog records or finding aids. More information about our policies and practices is available at Remediation of Harmful Language.

Accessibility

If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.