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Reaction Be9 (p,a gamma) Li6

Robert B. Day, Robert L. Walker

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Abstract

The energy of the gamma radiation produced when Be9 is bombarded by 2.6-MeV protons has been measured with a scintillation spectrometer and found to be 3.58 +/- O.O4 MeV. A suggestion of Hushley that this gamma ray is produced in the reaction Be9(p,alpha-gamma)Li6 was verified by observing coincidences between the gamma rays and low energy alpha particles. The excited state of Li9 which emits the gamma rays probably has spin zero and even parity and is presumably the analog of the ground state of the isobaric nucleus, He6. The thick target yield and cross section at resonance were found to be 4.8 X 10(exp{minus}6) gamma rays per proton and O.11 X 10(exp{minus}24) cm2, respectively.

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What this paper is about

The energy of the gamma radiation produced when Be9 is bombarded by 2.6-MeV protons has been measured with a scintillation spectrometer and found to be 3.58 +/- O.O4 MeV. A suggestion of Hushley that this gamma ray is produced in the reaction Be9(p,alpha-gamma)Li6 was verified by observing coincidences between the gamma rays and low energy alpha particles. The excited state of Li9 which emits the gamma rays probably has spin zero and even parity and is presumably the analog of the ground state of the isobaric nucleus, He6. The thick target yield and cross section at resonance were found to be 4.8 X 10(exp{minus}6) gamma rays per proton and O.11 X 10(exp{minus}24) cm2, respectively.

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Available abstract

The energy of the gamma radiation produced when Be9 is bombarded by 2.6-MeV protons has been measured with a scintillation spectrometer and found to be 3.58 +/- O.O4 MeV. A suggestion of Hushley that this gamma ray is produced in the reaction Be9(p,alpha-gamma)Li6 was verified by observing coincidences between the gamma rays and low energy alpha particles. The excited state of Li9 which emits the gamma rays probably has spin zero and even parity and is presumably the analog of the ground state of the isobaric nucleus, He6. The thick target yield and cross section at resonance were found to be 4.8 X 10(exp{minus}6) gamma rays per proton and O.11 X 10(exp{minus}24) cm2, respectively.

Key concepts: Gamma ray, Nuclear reaction, Alpha particle, Proton, Nuclear physics, Physics, Excited state, Isotopes of lithium

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