High-resolution hypernuclear spectroscopy at Jefferson Lab, Hall A
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00505076" target="_blank" >RIV/61389005:_____/19:00505076 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.99.054309" target="_blank" >https://doi.org/10.1103/PhysRevC.99.054309</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.99.054309" target="_blank" >10.1103/PhysRevC.99.054309</a>
Alternative languages
Result language
angličtina
Original language name
High-resolution hypernuclear spectroscopy at Jefferson Lab, Hall A
Original language description
The experiment E94-107 in Hall A at Jefferson Lab started a systematic study of high-resolution hypernuclear spectroscopy in the 0p-shell region of nuclei such as the hypernuclei produced in electroproduction on Be-9, C-12, and O-16 targets. In order to increase counting rates and provide unambiguous kaon identification, two superconducting septum magnets and a ring-imaging Cherenkov detector were added to the Hall A standard equipment. The high-quality beam, the good spectrometers, and the new experimental devices allowed us to obtain very good results. For the first time, measurable strength with sub-MeV energy resolution was observed for the core-excited states of B-12(Lambda). A high-quality N-16(Lambda) hypernuclear spectrum was likewise obtained. A first measurement of the Lambda binding energy for N-16(Lambda), calibrated against the elementary reaction on hydrogen, was obtained with high precision, 13.76 +/- 0.16 MeV. Similarly, the first Li-9(Lambda) hypernuclear spectrum shows general agreement with theory (distorted-wave impulse approximation with the SLA and BS3 electroproduction models and shell-model wave functions). Some disagreement exists with respect to the relative strength of the states making up the first multiplet. A Lambda separation energy of 8.36 MeV was obtained, in agreement with previous results. It has been shown that the electroproduction of hypernuclei can provide information complementary to that obtained with hadronic probes and the gamma-ray spectroscopy technique.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review C
ISSN
2469-9985
e-ISSN
2469-9993
Volume of the periodical
99
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
27
Pages from-to
054309
UT code for WoS article
000467727100002
EID of the result in the Scopus database
2-s2.0-85065864513