STUDY OF RELATIVISTIC ENERGY 207Pb PROJECTILE FRAGMENTATION ON HEAVY TARGETS

G. Sher, M. I. Shahzad, S. Manzoor, M. A. Rana, Z. Yasin

Abstract


Fragmentation of 158 A GeV 207Pb projectiles is studied on Bi, Pb, Cu and Al targets using CR-39 nuclear track detectors. Stacks containing detectors and targets were exposed at SPS beam facility of CERN. After chemically etching, detectors were scanned with an optical microscope. Lengths of etched cones produced as a result of beam ions and the fragments in the detectors have been measured. The charge resolution (σZ) achieved by this technique in the charge region 63 < Z < 82 is ~ 0.3e – 0.2e. The total charge-changing cross sections have been determined using the statistics of etched cone heights corresponding to the projectile ions and their nuclear fragments. Measured total charge-changing cross sections are compared to the corresponding calculations with semi-empirical models and predictions of the FLUKA code. The dependence of total cross sections on the projectile and target mass is also described.

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References


S. A. Bass, B. Mueller, G. S. F. Stephans,

and T. Ullrich (eds.), Proceedings of the 7th

International Conference on Strangeness in

Quark Matter SQM2003,Atlantic Beach, USA,

March 12–17 (2003), J. Phys. G: Nucl. Part.

Phys. 30, S1 (2004)

C.J.Waddington, Astrophys. J. 470, No. 2

(1996) 1218.

C.J. Waddington, J.R. Cummings, B.S.

Nilsen and T.L.Garrard, Phys. Rev. C61, No.

(2000) 024910.

C. Scheidenberger, et al., Phys. Rev.C 70,

No. 1 (2004) 014902.

H. Dekhissi, G. Giacomelli, M.Giorgini, G.

Mandrioli, S. Manzoor, L. Patrizii, V.Popa, P.

Serra and V.Togo, Nucl. Phys. A662, No. 1-2

(2000) 207.

Y.D. He and P.B. Price, Z. Phys. A348, No. 2

(1994) 105.

S.E. Hirzebruch, E. Becker, G. Hüntrup,T.

Streibel, E.Winkel and W. Heinrich, Phys.

Rev. C 51, No.4 (1995) 2085.

S. Manzoor, I.E. Qureshi, M.A. Rana, M.I.

Shahzad, M. Sajid, H.A. Khan, G. Giacomelli,

G. Mandriolli, L.Patrizii, V.Popa, P.Serra and

V.Togo, Nucl. Instrum. and Methods. A453¸

No. 3 (2000) 525.

A. Fass`o, A. Ferrari, J. Ranft and P.R. Sala,

New Developments in FLUKA Modelling of

Hadronic and EM Interactions, in

Proceedings of SARE-3, KEK-Tsukuba, H.

Hirayama ed., May 7–9 (1997), KEK report

Proceedings 97-5, 32 (1997) - A. Fasso`, A

Ferrari, S.Roesler, P.R. Sala, G. Battistoni, F.

Cerutti, E.Gadioli, M.V.Garzelli, F. Ballarini,

A. Ottolenghi, A.Empl, J. Ranft (2003). The

Physics Models of FLUKA: Status and

Recent Developments. Computing in High

Energy and Nuclear Physics 2003

Conference (CHEP2003), La Jolla, CA, USA,

March 24–28.

A. Fass`o, A. Ferrari, J. Ranft and P.R. Sala,

FLUKA: Status and Prospective for Hadronic

Applications, in Proceedings of the Monte

Carlo 2000 Conference, Lisbon, October 23–

2000, A. Kling, F. Bar˜ao, M. Nakagawa,

L. T´avora and P. Vaz eds., Springer-Verlag

Berlin, (2001)955.

A. Ferrari and P.R. Sala, The Physics of High

Energy Reactions, in Proceedings of

Workshop on Nuclear Reaction Data and

Nuclear Reactors Physics, Design and

Safety, A. Gandini, and G. Reffo eds.,

Trieste, Italy, April 1996, 2, 424 (1998).- A.

Ferrari,. P.R. Sala, A. Fasso, J. Ranft,, 2005.

FLUKA: a multi-particle transport code,

CERN-2005-10,INFN/TC-05/11,SLAC-R-773.

C. Brechtmann and W. Heinrich, Z. Phys. A.

No.4 (1988) 407.

S. Cecchini, T. Chiarusi, G. Giacomelli, G.

Giorgini, A. Kumar, G. Mandriolli, S.

Manzoor, A.R. Margiotta,E. Medinaecli, L.

Patrizii, V. Popa, I.E. Qureshi, G. Sirri. M.

Spurio and V. Togo, Nucl.Phys.A 807 No.3-4

(2008) 206

R.L. Fleischer, P. B. Price and R. M. Walker,

Nuclear Tracks in Solids (University of

California Press)(1975).

G. Giacomelli, M. Giorgini, G. Mandrioli , S.

Manzoor,L. Patrizii,V. Popa, P. Serra, V.

Togo and E.C. Vilela, Nucl. Instr. Meth. A411

(1998) 41.

J.Dreute, W. Heinrich, G. Rusch and B.

Wiegel, Phys. Rev. C 44 No.3 (1991)1056.

I.E. Qureshi, M.I. Shahzad, M.T. Javed, S.

Manzoor, G. Sher, F. Aleem and H.A. Khan,

Radiat. Meas. 40, No.2-6 (2005) 437.

D.L Henshaw, N.Griffiths, A.L. Landen, Otto

and E.V. Benton, Nucl. Instrum.Methods 180

No. 1 (1981) 65.

G.Sher, M.I. Shahzad and M. Hussain,

Radiat. Meas. 42, No.10 (2007)1692.

H.L. Bradt and B. Peters, Phys. Rev. 77 No.1

(1950) 54.

L.W. Townsend and J.W. Wilson, Radiat.

Res. 106, No. 3 (1986) 283.

C.A. Bertulani and G. Baur, Phys. Rep. 163

(1988) 299.

J. Ranft, Phys. Rev. D51 (1995)64.

A. Empl, A. Fass`o, A. Ferrari, et al.,

Progressand Applications of FLUKA, Proc.

ANS Radiation Protection & Shielding

Division 12th Topical Meeting, Santa Fe, New

Mexico, USA, April 14–18 (2002), (6 pages,

published in electronic format).

S. Roesler, R. Engel and J. Ranft, The Monte

Carlo Event Generator DPMJET-III, Proc.

Monte Carlo 2000 Conference, Lisbon,

October 23–26 (2000), A. Kling, F. Bar˜ao, M.

Nakagawa, L. T´avora, P. Vaz, eds.,

Springer-Verlag Berlin (2001)1033.

L.Y. Geer, J. Kalarman, B.S. Nilsen, C.J.

Waddington, W.R. Binns , J.R. Cummings

and T.L. Garrard, Phys. Rev. C52, No.1

(1995) 334.

D. Sampsonidis, E. Papanastassiou, M.

Zamani, M. Debeauvais, J.C. Adloff, B.A.

Kulakov, M.I. Krivopustov and V.S. Butsev

Phys. Rev. C51 (1995) 3304.

W. R Leo, Techniques for Nuclear and

Particles Physics Experiments (SpringerVerlag) (1987) p.26.

S. Cecchini, H. Dekhissi, V. Garutti,

G. Giacomelli, et al., Il Nuovo Cim. A109

(1996) 1119.


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