Observation of a minimum in collective flow for Ar+V collisions

Krofcheck, D.; Cebra, Daniel A.; Cronqvist, M.; Lacey, R.; Li, T.; Ogilvie, C.A.; Vander Molen, A.; Tyson, K.; Westfall, G.D.; Wilson, W.K.

doi:10.1103/PhysRevC.43.350

Observation of a minimum in collective flow for Ar+V collisions

D. Krofcheck
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
Daniel A. Cebra
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
M. Cronqvist
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
R. Lacey
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
T. Li
(
- Michigan State U., NSCL and
- Michigan State U.
)

Jan, 1991

2 pages

Published in:

Phys.Rev.C 43 (1991) 350-352

DOI:

10.1103/PhysRevC.43.350

View in:

reference search47 citations

Citations per year

Abstract: (APS)

We have added a new measurement at 100 MeV/nucleon to our previous excitation function for collective flow of light fragments from Ar40+51V collisions. In the earlier work, flow decreased as the beam energy was raised from 45 to 85 MeV/nucleon. This provided hints to the disappearance of flow, but the lack of measurements at higher beam energies precluded the observation of the reappearance of flow. At a beam energy of 100 MeV/nucleon the flow has reappeared and this allows an experimental determination of the region where attractive scattering balances with repulsive scattering in these collisions. A simultaneous least-squares fit of the flow data for light fragments yields (85±10) MeV/nucleon for the balance energy.

25.70.Np

References(12)

Figures(0)

Transverse momenta, nuclear equation of state, and momentum-dependent interactions in heavy-ion collisions

- Phys.Rev.C 41 (1990) 1545-1552
•
DOI:
- 10.1103/PhysRevC.41.1545

Disappearance of flow and its relevance to nuclear matter physics

C.A. Ogilvie
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
W. Bauer
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
Daniel A. Cebra
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
J. Clayton
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
S. Howden
(
- Michigan State U., NSCL and
- Michigan State U.
)

et al.

- Phys.Rev.C 42 (1990) R10-R14
•
DOI:
- 10.1103/PhysRevC.42.R10

Transverse Momentum Distributions in Intermediate-energy Heavy Ion Collisions

- Phys.Lett.B 189 (1987) 384-387,
- Phys. Lett. B189 ( 1987) 384-387
•
DOI:
- 10.1016/0370-2693(87)90645-9

- Nucl.Phys.A 477 13C

A Guide to microscopic models for intermediate-energy heavy ion collisions

G.F. Bertsch
(
- Michigan State U.
)
,
S. Das Gupta
(
- McGill U.
)

- Phys.Rept. 160 (1988) 189-233
•
DOI:
- 10.1016/0370-1573(88)90170-6

A LOGARITHMIC DETECTION SYSTEM SUITABLE FOR A 4 PI ARRAY

G.D. Westfall
(
- Michigan State U.
)
,
J.E. Yurkon
(
- Michigan State U.
)
,
J. Van Der Plicht
(
- Michigan State U.
)
,
Z.M. Konig
(
- Michigan State U.
)
,
B.V. Jacak
(
- Michigan State U.
)

et al.

- Nucl.Instrum.Meth.A 238 (1985) 347-353,
- Nucl. Instrum. Methods A238 ( 1985) 347-353
•
DOI:
- 10.1016/0168-9002(85)90472-3

Determination of the impact vector in intermediate energy heavy ion collisions

C.A. Ogilvie
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
Daniel A. Cebra
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
J. Clayton
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
S. Howden
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
J. Karn
(
- Michigan State U., NSCL and
- Michigan State U.
)

et al.

- Phys.Rev.C 40 (1989) 654-663
•
DOI:
- 10.1103/PhysRevC.40.654

Transverse collective motion in intermediate-energy heavy-ion collisions

C.A. Ogilvie
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
Daniel A. Cebra
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
J. Clayton
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
Pawel Danielewicz
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
S. Howden
(
- Michigan State U., NSCL and
- Michigan State U.
)

et al.

- Phys.Rev.C 40 (1989) 2592-2599
•
DOI:
- 10.1103/PhysRevC.40.2592

Azimuthal asymmetry in Ar+V collisions from E/A=35 to 85 MeV

W.K. Wilson
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
W. Benenson
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
Daniel A. Cebra
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
J. Clayton
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
S. Howden
(
- Michigan State U., NSCL and
- Michigan State U.
)

et al.

- Phys.Rev.C 41 (1990) R1881-R1884
•
DOI:
- 10.1103/PhysRevC.41.R1881

Transverse Momentum Analysis of Collective Motion in Relativistic Nuclear Collisions

P. Danielewicz
(
- LBL, Berkeley
)
,
G. Odyniec
(
- LBL, Berkeley
)

- Phys.Lett.B 157 (1985) 146-150,
- Lawrence Berkeley Lab. - LBL-18600 (84,REC.FEB.85) 14p,
- Phys. Lett. B157 (1985) 146-150 and Lawrence Berkeley Lab. - LBL-18600 (84,REC.FEB.85) 14p
•
e-Print:
- 2109.05308
•
DOI:
- 10.1016/0370-2693(85)91535-7

Disappearance of Flow in Heavy-Ion Collisions

D. Krofcheck
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
W. Bauer
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
G.M. Crawley
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
C. Djalali
(
- Michigan State U., NSCL and
- Michigan State U.
)
,
S. Howden
(
- Michigan State U., NSCL and
- Michigan State U.
)

et al.

- Phys.Rev.Lett. 63 (1989) 2028-2031
•
DOI:
- 10.1103/PhysRevLett.63.2028

Deflection of Nonequilibrium Light Particles by the Nuclear Mean Field

M.B. Tsang
(
- Michigan State U., NSCL
)
,
R.M. Ronningen
(
- Michigan State U., NSCL
)
,
G. Bertsch
(
- Michigan State U., NSCL
)
,
Z. Chen
(
- Michigan State U., NSCL
)
,
C.B. Chitwood
(
- Michigan State U., NSCL
)

et al.

- Phys.Rev.Lett. 57 (1986) 559-562
•
DOI:
- 10.1103/PhysRevLett.57.559