Conversion-electron study of 0+ excitations in 208Pb

J. N. Orce; T. Kibédi; G. D. Dracoulis; R. Julin; S. W. Yates

doi:10.1088/0954-3899/31/10/058

Conversion-electron study of 0⁺ excitations in ²⁰⁸Pb

J. N. Orce^*, T. Kibédi, G. D. Dracoulis, R. Julin, S. W. Yates

^*Corresponding author for this work

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Abstract

The ²⁰⁸Pb(p,p′e^-) reaction has been studied at a proton energy of 17.3 MeV. Singles data show E0 transitions from the 0 ⁺₂ and 0⁺₃ states at 4868 and 5241 keV, respectively, to the ground state. Proton-electron gated spectra indicate that few electrons from the 0⁺₂ state are in coincidence with backscattered protons, while those from the 0⁺₃ state are somewhat more abundant. From the singles spectra, an upper limit for the E3(0⁺₃ → 3^-₁)/E0(0 ⁺₃ → 0⁺₁) branching ratio of less than four has been measured. This observation is in agreement with previous predictions for a two-phonon octupole excitation.

Original language	English
Pages (from-to)	S1705-S1708
Journal	Journal of Physics G: Nuclear and Particle Physics
Volume	31
Issue number	10
DOIs	https://doi.org/10.1088/0954-3899/31/10/058
Publication status	Published - 1 Oct 2005

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title = "Conversion-electron study of 0+ excitations in 208Pb",

abstract = "The 208Pb(p,p′e-) reaction has been studied at a proton energy of 17.3 MeV. Singles data show E0 transitions from the 0 +2 and 0+3 states at 4868 and 5241 keV, respectively, to the ground state. Proton-electron gated spectra indicate that few electrons from the 0+2 state are in coincidence with backscattered protons, while those from the 0+3 state are somewhat more abundant. From the singles spectra, an upper limit for the E3(0+3 → 3-1)/E0(0 +3 → 0+1) branching ratio of less than four has been measured. This observation is in agreement with previous predictions for a two-phonon octupole excitation.",

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T1 - Conversion-electron study of 0+ excitations in 208Pb

AU - Orce, J. N.

AU - Kibédi, T.

AU - Dracoulis, G. D.

AU - Julin, R.

AU - Yates, S. W.

PY - 2005/10/1

Y1 - 2005/10/1

N2 - The 208Pb(p,p′e-) reaction has been studied at a proton energy of 17.3 MeV. Singles data show E0 transitions from the 0 +2 and 0+3 states at 4868 and 5241 keV, respectively, to the ground state. Proton-electron gated spectra indicate that few electrons from the 0+2 state are in coincidence with backscattered protons, while those from the 0+3 state are somewhat more abundant. From the singles spectra, an upper limit for the E3(0+3 → 3-1)/E0(0 +3 → 0+1) branching ratio of less than four has been measured. This observation is in agreement with previous predictions for a two-phonon octupole excitation.

AB - The 208Pb(p,p′e-) reaction has been studied at a proton energy of 17.3 MeV. Singles data show E0 transitions from the 0 +2 and 0+3 states at 4868 and 5241 keV, respectively, to the ground state. Proton-electron gated spectra indicate that few electrons from the 0+2 state are in coincidence with backscattered protons, while those from the 0+3 state are somewhat more abundant. From the singles spectra, an upper limit for the E3(0+3 → 3-1)/E0(0 +3 → 0+1) branching ratio of less than four has been measured. This observation is in agreement with previous predictions for a two-phonon octupole excitation.

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DO - 10.1088/0954-3899/31/10/058

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SP - S1705-S1708

JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

IS - 10

ER -

Conversion-electron study of 0⁺ excitations in ²⁰⁸Pb

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