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

Pysz, K.; Zychor, I.; Hermes, T.; Hartmann, M.; Ohm, H.; Kulessa, P.; Borgs, W.; Koch, H.R.; Maier, R.; Prasuhn, D.

doi:10.1016/S0168-9002(98)00784-0

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

K. Pysz
(
- Julich, Forschungszentrum and
- Jagiellonian U.
)
,
I. Zychor
(
- Lodz, Cosmic Ray
)
,
T. Hermes
(
- Julich, Forschungszentrum
)
,
M. Hartmann
(
- Julich, Forschungszentrum
)
,
H. Ohm
(
- Julich, Forschungszentrum
)

1999

10 pages

Published in:

Nucl.Instrum.Meth.A 420 (1999) 356-365

DOI:

10.1016/S0168-9002(98)00784-0

View in:

Nuclear Science References

reference search8 citations

Citations per year

Abstract: (Elsevier)

For the measurement of the lifetime of the Λ 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.

p nucleus: nuclear reaction
bismuth
uranium
target: internal
Lambda: hypernucleus
hypernucleus: lifetime
hypernucleus: recoil
proportional chamber: wire
Juelich COSY PS

References(19)

Figures(0)

[1]

V. Metag
,
E. Liukkonen
,
G. Sletten

- Nucl.Instrum.Meth. 114 (1974) 445

[2]

Observation of the Decay of Heavy Hypernuclei

J.P. Bocquet
(
- Grenoble, CEN
)
,
M. Epherre-Rey Campagnolle
(
- CSNSM, Orsay
)
,
G. Ericsson
(
- Uppsala U.
)
,
T. Johansson
(
- Uppsala U.
)
,
J. Konijn
(
- Nikhef, Amsterdam
)

et al.

- Phys.Lett.B 182 (1986) 146-150
•
DOI:
- 10.1016/0370-2693(86)91566-2

[3]

Fission of heavy hypernuclei formed in anti-proton annihilation

et al.

- Phys.Rev.C 47 (1993) 1957-1969,
- Phys. Rev. C47 (1993) 1957-1969 and CERN Geneva - CERN-PPE-92-106 (92/06,rec.Aug.) 27 p
•
DOI:
- 10.1103/PhysRevC.47.1957

[4]

Delayed Fission From the Anti-proton Annihilation in $^{209}$ Bi Evidence for Hypernuclear Decay

J.P. Bocquet
(
- Grenoble, CEN
)
,
M. Epherre-Rey-Campagnolle
(
- CSNSM, Orsay
)
,
G. Ericsson
(
- Uppsala U.
)
,
T. Johansson
(
- Uppsala U.
)
,
J. Konijn
(
- Nikhef, Amsterdam
)

et al.

- Phys.Lett.B 192 (1987) 312,
- IN *BAD HONNEF 1987, PROCEEDINGS, DYNAMICS OF COLLECTIVE PHENOMENA IN NUCLEAR AND SUBNUCLEAR LONG RANGE INTERACTIONS IN NUCLEI* 90-102.
•
DOI:
- 10.1016/0370-2693(87)90112-2

[5]

DELAYED FISSION OF PRODUCTS FROM INTERACTION OF ELECTRONS WITH AN ENERGY OF 1200-MEV WITH BISMUTH NUCLEI. (IN RUSSIAN)

- Yad.Fiz. 43 (1986) 1332-1333,
- Yad. Fiz. 43 ( 1986) 1332-1333

[6]

Production of hypernuclei in interaction of electrons with bismuth nuclei

- Yad.Fiz. 46 (1987) 1313-1319,
- Sov.J.Nucl.Phys. 46 (1987)

[7]

Cooler synchrotron COSY: Performance and perspectives

R. Maier
(
- Julich, Forschungszentrum
)

- Nucl.Instrum.Meth.A 390 (1997) 1-8
•
DOI:
- 10.1016/S0168-9002(97)00324-0

[8]

Lambda hypernucleus formation in proton nucleus reactions

et al.

- Z.Phys.A 351 (1995) 217-224
•
DOI:
- 10.1007/BF01289532

[9]

Properties of Lambda-hypernuclei from p + A reactions

et al.

- Z.Phys.A 354 (1996) 445-451
•
DOI:
- 10.1007/s002180050067

[10]

H.R. Koch
,
G. Riepe
,
A. Hamacher

- Nucl.Instrum.Meth.A 271 (1988) 375

[11]

Production of heavy hypernuclei in the p + Bi reaction and determination of their lifetime for fission induced by Lambda decay

P. Kulessa
(
- Julich, Forschungszentrum and
- Jagiellonian U.
)
,
Z. Rudy
(
- Julich, Forschungszentrum and
- Jagiellonian U.
)
,
M. Hartmann
(
- Julich, Forschungszentrum and
- Jagiellonian U.
)
,
K. Pysz
(
- Julich, Forschungszentrum and
- Jagiellonian U.
)
,
B. Kamys
(
- Julich, Forschungszentrum and
- Jagiellonian U.
)

et al.

- Phys.Lett.B 427 (1998) 403-408
•
DOI:
- 10.1016/S0370-2693(98)00397-9

[12]

in: E. Gadioli (Ed Proc. 8th Int. Conf. on Nuclear Reaction Mechanisms, Varenna, Italy, June, p. 142

W. Cassing
,
Z. Rudy
,
L. Jarczyk

[13]

Measurement of the neutrons emitted in the proton induced fission of Bi-209 and U-238 at 475-MeV

et al.

- Phys.Rev.C 41 (1990) 1050-1061
•
DOI:
- 10.1103/PhysRevC.41.1050

[14]

A.A. Kotov
,
G.G. Semenchuk

- Sov.J.Nucl.Phys. 17 (1973) 498

[15]

Inclusive Production of $K^+$ Mesons in 2.1-{GeV}/nucleon Nuclear Collisions

et al.

- Phys.Rev.C 40 (1989) 640-653,
- Phys.Rev.C 41 (1990) 1320-1320 (erratum),
- Phys. Rev. C40 (1989) 640-653 and Lawrence Berkeley Lab. - LBL-26761 (89,rec.Apr.) 57 p,
- Phys. Rev. C41 (1990) 1320. (Phys. Rev. C40 (1989) 640)
•
DOI:
- 10.1103/PhysRevC.41.1320

[16]

Lambda hyperon lifetime in very heavy hypernuclei produced in the p + U interaction

H. Ohm
(
- Julich, Forschungszentrum
)
,
T. Hermes
(
- Julich, Forschungszentrum
)
,
W. Borgs
(
- Julich, Forschungszentrum
)
,
H.R. Koch
(
- Julich, Forschungszentrum
)
,
R. Maier
(
- Julich, Forschungszentrum
)

et al.

- Phys.Rev.C 55 (1997) 3062-3065
•
DOI:
- 10.1103/PhysRevC.55.3062

[17]

Ph. D. thesis, Jagellonian University,, unpublished

K. Pysz

[18]

Interaction of 0.6 - 300 GeV Protons with U, Bi, Au, and Ag: Mica Track Detector Study

J. Hudis
(
- Brookhaven
)
,
S. Katcoff
(
- Brookhaven
)

- Phys.Rev.C 13 (1976) 1961-1965
•
DOI:
- 10.1103/PhysRevC.13.1961

[19]

E.S. Matusevich
,
V.I. Regushevskii

- Sov.J.Nucl.Phys. 7 (1968) 708