Delayed fission from the antiproton annihilation in 209Bi — evidence for hypernuclear decay

doi:10.1016/0370-2693(87)90112-2

Physics Letters B

Volume 192, Issues 3–4, 2 July 1987, Pages 312-314

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Abstract

Delayed fission following the annihilation of stopped antiprotons in ²⁰⁹Bi has been observed with a yield of approximately 3 × 10⁻⁴. The lifetime for delayed fission as measured by the recoil-distance technique is (2.5^+2.5_−1.0)×10⁻¹⁰ s. The observed delayed fission is interpreted as resulting from the decay of hypernuclei in the region of masses near 200 produced in the annihilation of antiprotons in ²⁰⁹Bi.

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¹: Present address: Institut Laue Langevin, F-38041 Grenoble, France.

²: Present address: CERN, EP Division, CH-1211 Geneva 23, Switzerland.

³: Present address: CEBAF, Newport News, VA 23606, USA.

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Delayed fission from the antiproton annihilation in 209Bi — evidence for hypernuclear decay

Abstract

Phys. Lett. B

Nucl. Phys. A

Delayed fission from the antiproton annihilation in ²⁰⁹Bi — evidence for hypernuclear decay