Fission as a filter for the study of heavy hypernuclei and other exotic atoms and nuclei

Margarian, A.T.

doi:10.1016/0168-9002(94)01539-2

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…A low-pressure MWPC (LPMWPC) is widely used as a beam monitoring detector in front of a target for its high counting rate capability and negligible disturbance for the beam [1,2]. At the same time, one can use it to detect some special particles or ions by tuning the working gas pressure [3,4]. The Jlab experiment E02-017 had been proposed to explore the way to measure the lifetime of heavy hypernuclei of 209 Λ Pb directly and the reaction 209 Bi(e, e K + ) 209 Λ Pb and 209 Bi(γ, K + ) 209 Λ Pb was utilized to produce the hypernuclei.…”

Section: Introductionmentioning

confidence: 99%

Performance of the low pressure MWPCs for fission fragments under a high background

Song

Margaryan

et al. 2011

Chinese Phys. C

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Two couples of low pressure multi-wire proportional chambers (MWPC) were located in the target chamber to detect fission fragments in a hypernuclei producing experiment at Thomas Jefferson National Laboratory (Jlab). In the experiment, a continuous wave (CW) electron beam was applied to form hypernuclei by electromagnetic interaction. In the target chamber, the high energy (1.853 GeV) and high intensity (500 nA) primary electron beam caused a high particle background, which influenced the detection of the fission fragments. This report described the design of the MWPCs and studied the fission-fragment detecting performance of them under such a high background. The efficiency of the MWPCs was given with the help of a high resolution kaon spectrometer. At the same time, the background particles were discussed with a Monte Carlo code based on GEANT4.

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Section: Introductionmentioning

confidence: 99%

Performance of the low pressure MWPCs for fission fragments under a high background

Song

Margaryan

et al. 2011

Chinese Phys. C

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Time-zero fission-fragment detector based on low-pressure multiwire proportional chambers

Assamagan

Baker

Bayatyan

et al. 1999

Nuclear Instruments and Methods in Physics Research Section A:

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Deeply bound pionic atoms from the (γ,p) reaction in nuclei

Hirenzaki

Oset

2002

Physics Letters B

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We study the (γ, p) reaction on 208 P b leading to 207 P b with a bound pion attached to it in the lowest 1s or 2p pionic levels. The reaction can be made recoilless to optimize the production cross section but we must choose a bit higher photon energy to overcome the Coulomb barrier in the proton emission. The cross sections obtained are easily measurable and can be larger than 50 per cent of the background from inclusive (γ,p). This makes it a clear case for the detection of the pionic atom signals, converting this reaction into a practical tool to produce deeply bound pionic atoms.

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Fission as a filter for the study of heavy hypernuclei and other exotic atoms and nuclei

Cited by 4 publications

References 46 publications

Performance of the low pressure MWPCs for fission fragments under a high background

Performance of the low pressure MWPCs for fission fragments under a high background

Time-zero fission-fragment detector based on low-pressure multiwire proportional chambers

Deeply bound pionic atoms from the (γ,p) reaction in nuclei

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