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

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.

doi:10.1103/physrevlett.130.222501

Title: First Observation of the β3αp Decay of ¹³O via β-Delayed Charged-Particle Spectroscopy

Journal Article · 01 June 2023 · Physical Review Letters

DOI: https://doi.org/10.1103/physrevlett.130.222501 · OSTI ID:2419412

^[1];

^[2]; Ahn, S. ^[3]; Barbui, M. ^[2]; Cha, S. M. ^[3];

^[2]; Hunt, C. ^[2]; Kim, C. H. ^[4]; Kim, D. ^[3];

^[4]; Koshchiy, E. ^[2];

^[2];

^[3];

^[2]; Pollacco, E. C. ^[5]; Roeder, B. T. ^[2];

^[2]; Saastamoinen, A. ^[2];

^[2]

Texas A & M Univ., College Station, TX (United States); OSTI
Texas A & M Univ., College Station, TX (United States)
Institute for Basic Science, Daejeon (Korea, Republic of)
Sungkyunkwan Univ., Seoul (Republic of Korea)
Univ. Paris-Saclay, Gif-sur-Yvette (France)

The β-delayed proton decay of ¹³O has previously been studied, but the direct observation of β-delayed 3⁢α⁢p decay has not been reported. Rare 3⁢α⁢p events from the decay of excited states in ¹³N* provide a sensitive probe of cluster configurations in ¹³N*. To measure the low-energy products following β-delayed 3⁢αp 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 × 10⁵ ¹³O implantations were made inside the TexAT time projection chamber. Furthermore, a total of 149 3⁢αp events were observed, yielding a β-delayed 3⁢αp branching ratio of 0.078(6)%. Four previously unknown α-decaying excited states were observed in ¹³N at 11.3, 12.4, 13.1, and 13.7 MeV decaying via the 3⁢α + p channel.

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Research Organization:: Texas A & M Univ., College Station, TX (United States)

Sponsoring Organization:: Institute for Basic Science (IBS); National Research Foundation of Korea (NRF); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: FG02-93ER40773; NA0003841

OSTI ID:: 2419412

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 22 Vol. 130; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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