2^{+} excitation of the ^{12}C Hoyle state

Martin Freer; H Fujita; Z Buthelezi; J Carter; RW Fearick; SV Förtsch; R Neveling; SM Perez; P Papka; FD Smit; JA Swartz; I Usman

doi:10.1103/PhysRevC.80.041303

2^{+} excitation of the ^{12}C Hoyle state

Martin Freer
, H Fujita
, Z Buthelezi
, J Carter
, RW Fearick
, SV Förtsch
, R Neveling
, SM Perez
, P Papka
, FD Smit
, JA Swartz
, I Usman

Physics and Astronomy

Research output: Contribution to journal › Article

135 Citations (Scopus)

Abstract

A high-energy-resolution magnetic spectrometer has been used to measure the C-12 excitation energy spectrum to search for the 2(+) excitation of the 7.65 MeV, 0(+) Hoyle state. By measuring in the diffractive minimum of the angular distribution for the broad 0(+) background, evidence is found for a possible 2(+) state at 9.6(1) MeV with a width of 600(100) keV. The implications for the Be-8 + He-4 reaction rate in stellar environments are discussed.

Original language	English
Article number	041303
Pages (from-to)	n/a
Journal	Physical Review C
Volume	80
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.80.041303
Publication status	Published - 1 Oct 2009

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10.1103/PhysRevC.80.041303

Birmingham Nuclear Physics Group Rolling Grant
Tungate, G. (Principal Investigator), Lazzeroni, C. (Co-Investigator), Evans, P. (Co-Investigator), Jones, P. (Co-Investigator) & Freer, M. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/08 → 31/07/13
Project: Research Councils

Cite this

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title = "2\textasciicircum{}\{+\} excitation of the \textasciicircum{}\{12\}C Hoyle state",

abstract = "A high-energy-resolution magnetic spectrometer has been used to measure the C-12 excitation energy spectrum to search for the 2(+) excitation of the 7.65 MeV, 0(+) Hoyle state. By measuring in the diffractive minimum of the angular distribution for the broad 0(+) background, evidence is found for a possible 2(+) state at 9.6(1) MeV with a width of 600(100) keV. The implications for the Be-8 + He-4 reaction rate in stellar environments are discussed.",

author = "Martin Freer and H Fujita and Z Buthelezi and J Carter and RW Fearick and SV F{\"o}rtsch and R Neveling and SM Perez and P Papka and FD Smit and JA Swartz and I Usman",

year = "2009",

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doi = "10.1103/PhysRevC.80.041303",

language = "English",

volume = "80",

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issn = "2469-9993",

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T1 - 2^{+} excitation of the ^{12}C Hoyle state

AU - Freer, Martin

AU - Fujita, H

AU - Buthelezi, Z

AU - Carter, J

AU - Fearick, RW

AU - Förtsch, SV

AU - Neveling, R

AU - Perez, SM

AU - Papka, P

AU - Smit, FD

AU - Swartz, JA

AU - Usman, I

PY - 2009/10/1

Y1 - 2009/10/1

N2 - A high-energy-resolution magnetic spectrometer has been used to measure the C-12 excitation energy spectrum to search for the 2(+) excitation of the 7.65 MeV, 0(+) Hoyle state. By measuring in the diffractive minimum of the angular distribution for the broad 0(+) background, evidence is found for a possible 2(+) state at 9.6(1) MeV with a width of 600(100) keV. The implications for the Be-8 + He-4 reaction rate in stellar environments are discussed.

AB - A high-energy-resolution magnetic spectrometer has been used to measure the C-12 excitation energy spectrum to search for the 2(+) excitation of the 7.65 MeV, 0(+) Hoyle state. By measuring in the diffractive minimum of the angular distribution for the broad 0(+) background, evidence is found for a possible 2(+) state at 9.6(1) MeV with a width of 600(100) keV. The implications for the Be-8 + He-4 reaction rate in stellar environments are discussed.

U2 - 10.1103/PhysRevC.80.041303

DO - 10.1103/PhysRevC.80.041303

M3 - Article

SN - 2469-9993

VL - 80

SP - n/a

JO - Physical Review C

JF - Physical Review C

IS - 4

M1 - 041303

ER -

2^{+} excitation of the ^{12}C Hoyle state

Abstract

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Birmingham Nuclear Physics Group Rolling Grant

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