First Excited States in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Zr</mi></mrow><mrow><mn>92</mn></mrow></msup></mrow></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Zr</mi></mrow><mrow><mn>94</mn></mrow></msup></mrow></math></span>

G. L. Griffith

doi:10.1103/PhysRev.103.643

Access by Xinjiang University

First Excited States in ${Zr}^{92}$ and ${Zr}^{94}$

G. L. Griffith

Westinghouse Research Laboratories, Pittsburgh, Pennsylvania

PDF

Phys. Rev. 103, 643 – Published 1 August, 1956

DOI: https://doi.org/10.1103/PhysRev.103.643

Abstract

Fast neutron inelastic scattering by separated isotopes of Zr was studied by observing the de-excitation gamma-ray spectra. The (926±9)-kev photopeak observed with normal Zr scatters was shown to be produced by two gamma rays differing in energy by less than 2.5% and originating in the isotopes ${Zr}^{92}$ and ${Zr}^{94}$ . This is interpreted as evidence for a first excited state at about 926 kev in both isotopes. Relative excitation curves for gamma-ray production by neutron inelastic scattering have been measured from threshold to $E_{n} = 5.5$ Mev for the 850-kev gamma ray from ${Fe}^{56}$ and the 926-kev gamma rays from ${Zr}^{92 + 94}$ .

References (12)

G. L. Griffith, Phys. Rev. 98, 579 (1955)
Scherrer, Allison, and Faust, Phys. Rev. 96, 386 (1954) J. Guernsey and C. Goodman, 101, 294 (1956) Day, Johnsrud, and Lind, Bull. Am. Phys. Soc. Ser. II, 1, 56 (1956)
R. M. Sinclair, Phys. Rev. 99, 1351 (1955)
Omitted endnote
A. O. Hanson and J. L. McKibben, Phys. Rev. 72, 673 (1947) Nobles, Day, Henkel, Jarvis, Kutarnia, McKibben, Perry, and Smith, Rev. Sci. Instr. 25, 334 (1954)
W. S. Emmerich and R. M. Sinclair, Westinghouse Research Report 60-94511-6-R11 (unpublished)
P. Preiswerk and P. Stähelin, Helv. Phys. Acta 24, 300 (1951)
R. V. Smith, Bull. Am. Phys. Soc. Ser. II, 1, 55 (1956)
Weddell, Jennings, and Hellens, Phys. Rev. 99, 621(A) (1955) J. B. Weddell and B. Jennings, Westinghouse Research Report 60-94511-6-R1 (unpublished)
R. B. Day, Phys. Rev. 102, No. 3 (1956)
L. Cranberg and J. S. Levin, Bull. Am. Phys. Soc. Ser. II, 1, 56 (1956)
G. Scharff-Goldhaber, Phys. Rev. 90, 587 (1953)

[c1] G. L. Griffith, Phys. Rev. 98, 579 (1955)

[c2] Scherrer, Allison, and Faust, Phys. Rev. 96, 386 (1954) J. Guernsey and C. Goodman, 101, 294 (1956) Day, Johnsrud, and Lind, Bull. Am. Phys. Soc. Ser. II, 1, 56 (1956)

[c3] R. M. Sinclair, Phys. Rev. 99, 1351 (1955)

[c4] Omitted endnote

[c5] A. O. Hanson and J. L. McKibben, Phys. Rev. 72, 673 (1947) Nobles, Day, Henkel, Jarvis, Kutarnia, McKibben, Perry, and Smith, Rev. Sci. Instr. 25, 334 (1954)

[c6] W. S. Emmerich and R. M. Sinclair, Westinghouse Research Report 60-94511-6-R11 (unpublished)

[c7] P. Preiswerk and P. Stähelin, Helv. Phys. Acta 24, 300 (1951)

[c8] R. V. Smith, Bull. Am. Phys. Soc. Ser. II, 1, 55 (1956)

[c9] Weddell, Jennings, and Hellens, Phys. Rev. 99, 621(A) (1955) J. B. Weddell and B. Jennings, Westinghouse Research Report 60-94511-6-R1 (unpublished)

[c10] R. B. Day, Phys. Rev. 102, No. 3 (1956)

[c11] L. Cranberg and J. S. Levin, Bull. Am. Phys. Soc. Ser. II, 1, 56 (1956)

[c12] G. Scharff-Goldhaber, Phys. Rev. 90, 587 (1953)

Physical Review Journals Archive

Export citation

Export citation

First Excited States in ${Zr}^{92}$ and ${Zr}^{94}$

Abstract

References (12)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation

First Excited States in Zr92 and Zr94

Abstract

References (12)

First Excited States in ${Zr}^{92}$ and ${Zr}^{94}$