Details

Autor(en) / Beteiligte

• Bishop, J
• Rogachev, G V
• Ahn, S
• Barbui, M
• Cha, S M
• Harris, E
• Hunt, C
• Kim, C H
• Kim, D
• Kim, S H
• Koshchiy, E
• Luo, Z
• Park, C
• Parker, C E
• Pollacco, E C
• Roeder, B T
• Roosa, M
• Saastamoinen, A
• Scriven, D P

Titel

First Observation of the β3αp Decay of ^{13}O via β-Delayed Charged-Particle Spectroscopy

Ist Teil von

• Physical review letters, 2023-06, Vol.130 (22), p.222501-222501

Ort / Verlag

United States

Erscheinungsjahr

2023

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• The β-delayed proton decay of ^{13}O has previously been studied, but the direct observation of β-delayed 3αp decay has not been reported. Rare 3αp events from the decay of excited states in ^{13}N^{⋆} provide a sensitive probe of cluster configurations in ^{13}N. To measure the low-energy products following β-delayed 3αp decay, the Texas Active Target (TexAT) time projection chamber was employed using the one-at-a-time β-delayed charged-particle spectroscopy technique at the Cyclotron Institute, Texas A&M University. A total of 1.9×10^{5} ^{13}O implantations were made inside the TexAT time projection chamber. A total of 149 3αp events were observed, yielding a β-delayed 3αp branching ratio of 0.078(6)%. Four previously unknown α-decaying excited states were observed in ^{13}N at 11.3, 12.4, 13.1, and 13.7 MeV decaying via the 3α+p channel.