Two-proton emission from the ground state of O12

R. A. Kryger; A. Azhari; M. Hellström; J. H. Kelley; T. Kubo; R. Pfaff; E. Ramakrishnan; B. M. Sherrill; M. Thoennessen; S. Yokoyama; R. J. Charity; J. Dempsey; A. Kirov; N. Robertson; D. G. Sarantites; L. G. Sobotka; J. A. Winger

doi:10.1103/PhysRevLett.74.860

Two-proton emission from the ground state of O12

R. A. Kryger
, A. Azhari
, M. Hellström
, J. H. Kelley
, T. Kubo
, R. Pfaff
, E. Ramakrishnan
, B. M. Sherrill
, M. Thoennessen
, S. Yokoyama
, R. J. Charity
, J. Dempsey
, A. Kirov
, N. Robertson
, D. G. Sarantites
, L. G. Sobotka
, J. A. Winger

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

155 Scopus citations

Abstract

The three-body decay O12→2p+C10 was studied following production via single-neutron stripping from a radioactive O13 projectile. This is the first observation of two-proton emission from an unbound ground state where the one-proton emission channel is energetically closed beyond the lightest case of Be6. No evidence for He2 emission is seen, despite predictions for a large diproton branching ratio. An upper limit of 7% (95% C.L.) is established for this decay branch. The implications of the small diproton branching ratio observed here and seen previously in Be6 are discussed.

Original language	English
Pages (from-to)	860-863
Number of pages	4
Journal	Physical Review Letters
Volume	74
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.74.860
State	Published - 1995

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Kryger, R. A., Azhari, A., Hellström, M., Kelley, J. H., Kubo, T., Pfaff, R., Ramakrishnan, E., Sherrill, B. M., Thoennessen, M., Yokoyama, S., Charity, R. J., Dempsey, J., Kirov, A., Robertson, N., Sarantites, D. G., Sobotka, L. G., & Winger, J. A. (1995). Two-proton emission from the ground state of O12. Physical Review Letters, 74(6), 860-863. https://doi.org/10.1103/PhysRevLett.74.860

@article{da961e7397ba4645b33384062f460a4c,

title = "Two-proton emission from the ground state of O12",

abstract = "The three-body decay O12→2p+C10 was studied following production via single-neutron stripping from a radioactive O13 projectile. This is the first observation of two-proton emission from an unbound ground state where the one-proton emission channel is energetically closed beyond the lightest case of Be6. No evidence for He2 emission is seen, despite predictions for a large diproton branching ratio. An upper limit of 7\% (95\% C.L.) is established for this decay branch. The implications of the small diproton branching ratio observed here and seen previously in Be6 are discussed.",

author = "Kryger, \{R. A.\} and A. Azhari and M. Hellstr{\"o}m and Kelley, \{J. H.\} and T. Kubo and R. Pfaff and E. Ramakrishnan and Sherrill, \{B. M.\} and M. Thoennessen and S. Yokoyama and Charity, \{R. J.\} and J. Dempsey and A. Kirov and N. Robertson and Sarantites, \{D. G.\} and Sobotka, \{L. G.\} and Winger, \{J. A.\}",

year = "1995",

doi = "10.1103/PhysRevLett.74.860",

language = "English",

volume = "74",

pages = "860--863",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "6",

}

Kryger, RA, Azhari, A, Hellström, M, Kelley, JH, Kubo, T, Pfaff, R, Ramakrishnan, E, Sherrill, BM, Thoennessen, M, Yokoyama, S, Charity, RJ, Dempsey, J, Kirov, A, Robertson, N, Sarantites, DG, Sobotka, LG & Winger, JA 1995, 'Two-proton emission from the ground state of O12', Physical Review Letters, vol. 74, no. 6, pp. 860-863. https://doi.org/10.1103/PhysRevLett.74.860

TY - JOUR

T1 - Two-proton emission from the ground state of O12

AU - Kryger, R. A.

AU - Azhari, A.

AU - Hellström, M.

AU - Kelley, J. H.

AU - Kubo, T.

AU - Pfaff, R.

AU - Ramakrishnan, E.

AU - Sherrill, B. M.

AU - Thoennessen, M.

AU - Yokoyama, S.

AU - Charity, R. J.

AU - Dempsey, J.

AU - Kirov, A.

AU - Robertson, N.

AU - Sarantites, D. G.

AU - Sobotka, L. G.

AU - Winger, J. A.

PY - 1995

Y1 - 1995

N2 - The three-body decay O12→2p+C10 was studied following production via single-neutron stripping from a radioactive O13 projectile. This is the first observation of two-proton emission from an unbound ground state where the one-proton emission channel is energetically closed beyond the lightest case of Be6. No evidence for He2 emission is seen, despite predictions for a large diproton branching ratio. An upper limit of 7% (95% C.L.) is established for this decay branch. The implications of the small diproton branching ratio observed here and seen previously in Be6 are discussed.

AB - The three-body decay O12→2p+C10 was studied following production via single-neutron stripping from a radioactive O13 projectile. This is the first observation of two-proton emission from an unbound ground state where the one-proton emission channel is energetically closed beyond the lightest case of Be6. No evidence for He2 emission is seen, despite predictions for a large diproton branching ratio. An upper limit of 7% (95% C.L.) is established for this decay branch. The implications of the small diproton branching ratio observed here and seen previously in Be6 are discussed.

UR - https://www.scopus.com/pages/publications/4043095646

U2 - 10.1103/PhysRevLett.74.860

DO - 10.1103/PhysRevLett.74.860

M3 - Article

AN - SCOPUS:4043095646

SN - 0031-9007

VL - 74

SP - 860

EP - 863

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

ER -

Two-proton emission from the ground state of O12

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