The E1 capture amplitude in C-12 (alpha,gamma(0))O-16

L  Gialanella; D  Rogalla; F  Strieder; S  Theis; G  Gyurki; C  Agodi; R  Alba; M  Aliotta; L  Campajola; A  Del Zoppo; A  D'Onofrio; P  Figuera; U  Greife; G  Imbriani; A  Ordine; V  Roca; C  Rolfs; M  Romano; C  Sabbarese; P  Sapienza; F  Schumann; E  Somorjai; F  Terrasi; H P  Trautvetter

doi:10.1007/s100500170075

The E1 capture amplitude in C-12 (alpha,gamma(0))O-16

L Gialanella, D Rogalla, F Strieder, S Theis, G Gyurki, C Agodi, R Alba, M Aliotta, L Campajola, A Del Zoppo, A D'Onofrio, P Figuera, U Greife, G Imbriani, A Ordine, V Roca, C Rolfs, M Romano, C Sabbarese, P SapienzaF Schumann, E Somorjai, F Terrasi, H P Trautvetter

School of Physics and Astronomy

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

Abstract / Description of output

An excitation function of the ground-state gamma (0)-ray capture transition in C-12(alpha, gamma)O-16 at theta (gamma) = 90 degrees was obtained in far geometry using six Ge detectors, where the study of the reaction was initiated in inverse kinematics involving a windowless gas target. The detectors observed predominantly the El capture amplitude. The data at E = 1.32 to 2.99 MeV lead to an extrapolated astrophysical S factor S-E1(E-0) = 90 +/- 15 keV b at E-0 = 0.3 MeV (for the case of constructive interference between the two lowest E1 sources), in good agreement with previous works. However, a novel Monte Carlo approach in the data extrapolation reveals systematic differences between the various data sets such that a combined analysis of all available data sets could produce a biased estimate of the S-E1(E-0) value. As a consequence, the case of destructive interference between the two lowest E1 sources with S-E1(E-0) = 8 +/- 3 keV b cannot be ruled out rigorously.

Original language	English
Pages (from-to)	357-370
Number of pages	14
Journal	The European Physical Journal A (EPJ A)
Volume	11
Issue number	3
DOIs	https://doi.org/10.1007/s100500170075
Publication status	Published - Jul 2001

Keywords / Materials (for Non-textual outputs)

STELLAR ENERGIES
CROSS-SECTION

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10.1007/s100500170075

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Gialanella, L., Rogalla, D., Strieder, F., Theis, S., Gyurki, G., Agodi, C., Alba, R., Aliotta, M., Campajola, L., Del Zoppo, A., D'Onofrio, A., Figuera, P., Greife, U., Imbriani, G., Ordine, A., Roca, V., Rolfs, C., Romano, M., Sabbarese, C., ... Trautvetter, H. P. (2001). The E1 capture amplitude in C-12 (alpha,gamma(0))O-16. The European Physical Journal A (EPJ A), 11(3), 357-370. https://doi.org/10.1007/s100500170075

@article{2ffc37c2b5b246c1a8595ae059a07cf1,

title = "The E1 capture amplitude in C-12 (alpha,gamma(0))O-16",

abstract = "An excitation function of the ground-state gamma (0)-ray capture transition in C-12(alpha, gamma)O-16 at theta (gamma) = 90 degrees was obtained in far geometry using six Ge detectors, where the study of the reaction was initiated in inverse kinematics involving a windowless gas target. The detectors observed predominantly the El capture amplitude. The data at E = 1.32 to 2.99 MeV lead to an extrapolated astrophysical S factor S-E1(E-0) = 90 +/- 15 keV b at E-0 = 0.3 MeV (for the case of constructive interference between the two lowest E1 sources), in good agreement with previous works. However, a novel Monte Carlo approach in the data extrapolation reveals systematic differences between the various data sets such that a combined analysis of all available data sets could produce a biased estimate of the S-E1(E-0) value. As a consequence, the case of destructive interference between the two lowest E1 sources with S-E1(E-0) = 8 +/- 3 keV b cannot be ruled out rigorously.",

keywords = "STELLAR ENERGIES, CROSS-SECTION",

author = "L Gialanella and D Rogalla and F Strieder and S Theis and G Gyurki and C Agodi and R Alba and M Aliotta and L Campajola and {Del Zoppo}, A and A D'Onofrio and P Figuera and U Greife and G Imbriani and A Ordine and V Roca and C Rolfs and M Romano and C Sabbarese and P Sapienza and F Schumann and E Somorjai and F Terrasi and Trautvetter, {H P}",

year = "2001",

month = jul,

doi = "10.1007/s100500170075",

language = "English",

volume = "11",

pages = "357--370",

journal = "The European Physical Journal A (EPJ A)",

issn = "1434-6001",

publisher = "Springer",

number = "3",

}

Gialanella, L, Rogalla, D, Strieder, F, Theis, S, Gyurki, G, Agodi, C, Alba, R, Aliotta, M, Campajola, L, Del Zoppo, A, D'Onofrio, A, Figuera, P, Greife, U, Imbriani, G, Ordine, A, Roca, V, Rolfs, C, Romano, M, Sabbarese, C, Sapienza, P, Schumann, F, Somorjai, E, Terrasi, F & Trautvetter, HP 2001, 'The E1 capture amplitude in C-12 (alpha,gamma(0))O-16', The European Physical Journal A (EPJ A), vol. 11, no. 3, pp. 357-370. https://doi.org/10.1007/s100500170075

TY - JOUR

T1 - The E1 capture amplitude in C-12 (alpha,gamma(0))O-16

AU - Gialanella, L

AU - Rogalla, D

AU - Strieder, F

AU - Theis, S

AU - Gyurki, G

AU - Agodi, C

AU - Alba, R

AU - Aliotta, M

AU - Campajola, L

AU - Del Zoppo, A

AU - D'Onofrio, A

AU - Figuera, P

AU - Greife, U

AU - Imbriani, G

AU - Ordine, A

AU - Roca, V

AU - Rolfs, C

AU - Romano, M

AU - Sabbarese, C

AU - Sapienza, P

AU - Schumann, F

AU - Somorjai, E

AU - Terrasi, F

AU - Trautvetter, H P

PY - 2001/7

Y1 - 2001/7

N2 - An excitation function of the ground-state gamma (0)-ray capture transition in C-12(alpha, gamma)O-16 at theta (gamma) = 90 degrees was obtained in far geometry using six Ge detectors, where the study of the reaction was initiated in inverse kinematics involving a windowless gas target. The detectors observed predominantly the El capture amplitude. The data at E = 1.32 to 2.99 MeV lead to an extrapolated astrophysical S factor S-E1(E-0) = 90 +/- 15 keV b at E-0 = 0.3 MeV (for the case of constructive interference between the two lowest E1 sources), in good agreement with previous works. However, a novel Monte Carlo approach in the data extrapolation reveals systematic differences between the various data sets such that a combined analysis of all available data sets could produce a biased estimate of the S-E1(E-0) value. As a consequence, the case of destructive interference between the two lowest E1 sources with S-E1(E-0) = 8 +/- 3 keV b cannot be ruled out rigorously.

AB - An excitation function of the ground-state gamma (0)-ray capture transition in C-12(alpha, gamma)O-16 at theta (gamma) = 90 degrees was obtained in far geometry using six Ge detectors, where the study of the reaction was initiated in inverse kinematics involving a windowless gas target. The detectors observed predominantly the El capture amplitude. The data at E = 1.32 to 2.99 MeV lead to an extrapolated astrophysical S factor S-E1(E-0) = 90 +/- 15 keV b at E-0 = 0.3 MeV (for the case of constructive interference between the two lowest E1 sources), in good agreement with previous works. However, a novel Monte Carlo approach in the data extrapolation reveals systematic differences between the various data sets such that a combined analysis of all available data sets could produce a biased estimate of the S-E1(E-0) value. As a consequence, the case of destructive interference between the two lowest E1 sources with S-E1(E-0) = 8 +/- 3 keV b cannot be ruled out rigorously.

KW - STELLAR ENERGIES

KW - CROSS-SECTION

U2 - 10.1007/s100500170075

DO - 10.1007/s100500170075

M3 - Article

SN - 1434-6001

VL - 11

SP - 357

EP - 370

JO - The European Physical Journal A (EPJ A)

JF - The European Physical Journal A (EPJ A)

IS - 3

ER -

The E1 capture amplitude in C-12 (alpha,gamma(0))O-16

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