Source:http://linkedlifedata.com/resource/pubmed/id/17025958
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
12
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| pubmed:dateCreated |
2006-10-9
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| pubmed:abstractText |
The nuclear physics input from the 3He(alpha,gamma)7Be cross section is a major uncertainty in the fluxes of 7Be and 8B neutrinos from the Sun predicted by solar models and in the 7Li abundance obtained in big-bang nucleosynthesis calculations. The present work reports on a new precision experiment using the activation technique at energies directly relevant to big-bang nucleosynthesis. Previously such low energies had been reached experimentally only by the prompt-gamma technique and with inferior precision. Using a windowless gas target, high beam intensity, and low background gamma-counting facilities, the 3He(alpha,gamma)7Be cross section has been determined at 127, 148, and 169 keV center-of-mass energy with a total uncertainty of 4%. The sources of systematic uncertainty are discussed in detail. The present data can be used in big-bang nucleosynthesis calculations and to constrain the extrapolation of the 3He(alpha,gamma)7Be astrophysical S factor to solar energies.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Sep
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| pubmed:issn |
0031-9007
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| pubmed:author |
pubmed-author:AlvarezC RossiCR,
pubmed-author:BemmererDD,
pubmed-author:BonettiRR,
pubmed-author:BrogginiCC,
pubmed-author:ConfortolaFF,
pubmed-author:CorvisieroPP,
pubmed-author:CostantiniHH,
pubmed-author:ElekesZZ,
pubmed-author:FormicolaAA,
pubmed-author:GervinoGG,
pubmed-author:GuglielmettiAA,
pubmed-author:GustavinoCC,
pubmed-author:GyürkyGyG,
pubmed-author:ImbrianiGG,
pubmed-author:JunkerMM,
pubmed-author:KannaBB,
pubmed-author:LUNA Collaboration,
pubmed-author:LaubensteinMM,
pubmed-author:LemutAA,
pubmed-author:LimataBB,
pubmed-author:LozzaVV,
pubmed-author:MartaMM,
pubmed-author:MenegazzoRR,
pubmed-author:PratiPP,
pubmed-author:RocaVV,
pubmed-author:RolfsCC,
pubmed-author:SomorjaiEE,
pubmed-author:StranieroOO,
pubmed-author:StriederFF,
pubmed-author:TerrasiFF,
pubmed-author:TrautvetterH PHP
|
| pubmed:issnType |
Print
|
| pubmed:day |
22
|
| pubmed:volume |
97
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
122502
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| pubmed:year |
2006
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| pubmed:articleTitle |
Activation measurement of the 3He(alpha,gamma)7Be cross section at low energy.
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| pubmed:affiliation |
Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Padova, via Marzolo 8, 35131 Padova, Italy.
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| pubmed:publicationType |
Journal Article
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