Di-lepton yield from the decay of excited 28Si states

J. C. Bacelar, A. Buda, A. Bałanda, A. Krasznahorkay, H. van der Ploeg, Z. Sujkowski, A. van der Woude

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The first dilepton yield measurements from excited nuclear states obtained with a new Positron-Electron Pair Spectroscopic Instrument (PEPSI) are reported. Nuclear states in 28Si, with an initial excitation energy E* = 50 MeV, were populated via the isospin T = 0 reaction 4He + 24Mg and the mixed-isospin 3He + 25Mg reaction. In both reactions the dilepton (e+e-) and photon decay yields were measured concurrently. An excess of counts in the e+e- spectrum, over the converted photon yield, is observed in the energy region above 15 MeV. An analyses is discussed whereby the observed excess counts are assumed to represent the isoscalar E0 strength in excited nuclear states.

Original languageEnglish
Pages (from-to)101-109
Number of pages9
JournalNuclear Physics A
Volume569
Issue number1-2
DOIs
Publication statusPublished - Mar 7 1994

Fingerprint

leptons
decay
excitation
electron-positron pairs
photons
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Bacelar, J. C., Buda, A., Bałanda, A., Krasznahorkay, A., van der Ploeg, H., Sujkowski, Z., & van der Woude, A. (1994). Di-lepton yield from the decay of excited 28Si states. Nuclear Physics A, 569(1-2), 101-109. https://doi.org/10.1016/0375-9474(94)90100-7

Di-lepton yield from the decay of excited 28Si states. / Bacelar, J. C.; Buda, A.; Bałanda, A.; Krasznahorkay, A.; van der Ploeg, H.; Sujkowski, Z.; van der Woude, A.

In: Nuclear Physics A, Vol. 569, No. 1-2, 07.03.1994, p. 101-109.

Research output: Contribution to journalArticle

Bacelar, JC, Buda, A, Bałanda, A, Krasznahorkay, A, van der Ploeg, H, Sujkowski, Z & van der Woude, A 1994, 'Di-lepton yield from the decay of excited 28Si states', Nuclear Physics A, vol. 569, no. 1-2, pp. 101-109. https://doi.org/10.1016/0375-9474(94)90100-7
Bacelar JC, Buda A, Bałanda A, Krasznahorkay A, van der Ploeg H, Sujkowski Z et al. Di-lepton yield from the decay of excited 28Si states. Nuclear Physics A. 1994 Mar 7;569(1-2):101-109. https://doi.org/10.1016/0375-9474(94)90100-7
Bacelar, J. C. ; Buda, A. ; Bałanda, A. ; Krasznahorkay, A. ; van der Ploeg, H. ; Sujkowski, Z. ; van der Woude, A. / Di-lepton yield from the decay of excited 28Si states. In: Nuclear Physics A. 1994 ; Vol. 569, No. 1-2. pp. 101-109.
@article{e9fb92ccc9504058b3982a28451f8290,
title = "Di-lepton yield from the decay of excited 28Si states",
abstract = "The first dilepton yield measurements from excited nuclear states obtained with a new Positron-Electron Pair Spectroscopic Instrument (PEPSI) are reported. Nuclear states in 28Si, with an initial excitation energy E* = 50 MeV, were populated via the isospin T = 0 reaction 4He + 24Mg and the mixed-isospin 3He + 25Mg reaction. In both reactions the dilepton (e+e-) and photon decay yields were measured concurrently. An excess of counts in the e+e- spectrum, over the converted photon yield, is observed in the energy region above 15 MeV. An analyses is discussed whereby the observed excess counts are assumed to represent the isoscalar E0 strength in excited nuclear states.",
author = "Bacelar, {J. C.} and A. Buda and A. Bałanda and A. Krasznahorkay and {van der Ploeg}, H. and Z. Sujkowski and {van der Woude}, A.",
year = "1994",
month = "3",
day = "7",
doi = "10.1016/0375-9474(94)90100-7",
language = "English",
volume = "569",
pages = "101--109",
journal = "Nuclear Physics A",
issn = "0375-9474",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Di-lepton yield from the decay of excited 28Si states

AU - Bacelar, J. C.

AU - Buda, A.

AU - Bałanda, A.

AU - Krasznahorkay, A.

AU - van der Ploeg, H.

AU - Sujkowski, Z.

AU - van der Woude, A.

PY - 1994/3/7

Y1 - 1994/3/7

N2 - The first dilepton yield measurements from excited nuclear states obtained with a new Positron-Electron Pair Spectroscopic Instrument (PEPSI) are reported. Nuclear states in 28Si, with an initial excitation energy E* = 50 MeV, were populated via the isospin T = 0 reaction 4He + 24Mg and the mixed-isospin 3He + 25Mg reaction. In both reactions the dilepton (e+e-) and photon decay yields were measured concurrently. An excess of counts in the e+e- spectrum, over the converted photon yield, is observed in the energy region above 15 MeV. An analyses is discussed whereby the observed excess counts are assumed to represent the isoscalar E0 strength in excited nuclear states.

AB - The first dilepton yield measurements from excited nuclear states obtained with a new Positron-Electron Pair Spectroscopic Instrument (PEPSI) are reported. Nuclear states in 28Si, with an initial excitation energy E* = 50 MeV, were populated via the isospin T = 0 reaction 4He + 24Mg and the mixed-isospin 3He + 25Mg reaction. In both reactions the dilepton (e+e-) and photon decay yields were measured concurrently. An excess of counts in the e+e- spectrum, over the converted photon yield, is observed in the energy region above 15 MeV. An analyses is discussed whereby the observed excess counts are assumed to represent the isoscalar E0 strength in excited nuclear states.

UR - http://www.scopus.com/inward/record.url?scp=4243651251&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243651251&partnerID=8YFLogxK

U2 - 10.1016/0375-9474(94)90100-7

DO - 10.1016/0375-9474(94)90100-7

M3 - Article

AN - SCOPUS:4243651251

VL - 569

SP - 101

EP - 109

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1-2

ER -