Measurement of the lifetime of heavy λ hypernuclei with the recoil shadow method and internal targets in the storage ring COSY-Jülich

K. Pysz, I. Zychor, T. Hermes, M. Hartmann, H. Ohm, P. Kulessa, W. Borgs, H. R. Koch, R. Maier, D. Prasuhn, Z. Rudy, B. Kamys, W. Cassing, J. Pfeiffer, Yusuke Uozumi, L. Jarczyk, A. Strzałkowski, O. W.B. Schult

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

For the measurement of the lifetime of the A hyperon in very heavy hypernuclei we have used proton projectiles for the production of strangeness and the recoil shadow method in the circulating beam of COSY-Jülich. This permitted us to use a very thin ribbon target without loss in luminosity. The target fabrication and frameless mounting is described in detail. A special mode of operating COSY was developed in order to bump the beam onto the target and to apply a supercycle. A description is given of the apparatus, tests, the calibration and the data analysis. As an example the p + Bi results are presented and discussed.

Original languageEnglish
Pages (from-to)356-365
Number of pages10
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume420
Issue number1-2
DOIs
Publication statusPublished - Jan 1 1999

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hypernuclei
Storage rings
Projectiles
Mountings
Luminance
Protons
Calibration
Fabrication
life (durability)
strangeness
mounting
ribbons
projectiles
luminosity
fabrication
protons

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Measurement of the lifetime of heavy λ hypernuclei with the recoil shadow method and internal targets in the storage ring COSY-Jülich. / Pysz, K.; Zychor, I.; Hermes, T.; Hartmann, M.; Ohm, H.; Kulessa, P.; Borgs, W.; Koch, H. R.; Maier, R.; Prasuhn, D.; Rudy, Z.; Kamys, B.; Cassing, W.; Pfeiffer, J.; Uozumi, Yusuke; Jarczyk, L.; Strzałkowski, A.; Schult, O. W.B.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 420, No. 1-2, 01.01.1999, p. 356-365.

Research output: Contribution to journalArticle

Pysz, K, Zychor, I, Hermes, T, Hartmann, M, Ohm, H, Kulessa, P, Borgs, W, Koch, HR, Maier, R, Prasuhn, D, Rudy, Z, Kamys, B, Cassing, W, Pfeiffer, J, Uozumi, Y, Jarczyk, L, Strzałkowski, A & Schult, OWB 1999, 'Measurement of the lifetime of heavy λ hypernuclei with the recoil shadow method and internal targets in the storage ring COSY-Jülich', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 420, no. 1-2, pp. 356-365. https://doi.org/10.1016/S0168-9002(98)00784-0
Pysz, K. ; Zychor, I. ; Hermes, T. ; Hartmann, M. ; Ohm, H. ; Kulessa, P. ; Borgs, W. ; Koch, H. R. ; Maier, R. ; Prasuhn, D. ; Rudy, Z. ; Kamys, B. ; Cassing, W. ; Pfeiffer, J. ; Uozumi, Yusuke ; Jarczyk, L. ; Strzałkowski, A. ; Schult, O. W.B. / Measurement of the lifetime of heavy λ hypernuclei with the recoil shadow method and internal targets in the storage ring COSY-Jülich. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1999 ; Vol. 420, No. 1-2. pp. 356-365.
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