The decline of multifragmentation in {sup 197}Au + {sup 197}Au collisions at E/A = 100, 250 and 400 MeV

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Bulletin of the American Physical Society

OSTI ID:243612

Tsang, M B ^[1]

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1. Michigan State Univ., East Lansing, MI (United States)

Multifragmentation events have been measured in 4{pi} coverage for {sup 197}Au collisions at E/A = 100, 250 and 400 MeV using the Miniball/Wall, the Catania Silicon-CsI array and the Aladin Spectrometer. For E/A = 250 MeV and 400 MeV, there is monotonic relation between charge particle multiplicities, N{sub c} and bound charge particles from the projectile spectator, Z{sub bound}. At E/A = 100 MeV, the number of intermediate mass fragments (Z>3) produced increases monotonically with N{sub c} reaching values close to 10 fragments for the most central collisions. As the incident energy is increased, however, the multiplicity of fragments produced in central collisions decreases, consistent with an evolutionn of multifragmentation in the central collisions towards vaporization. At the highest energy, E/A = 400 MeV, multifragmentation becomes a phenomenon confined to intermediate impact parameters, consistent with an evolution towards peripheral collisions as the process evolves towards limiting fragmentation.

• OSTI ID: 243612
• Report Number(s): CONF-9304297--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
GEV RANGE 10-100
GOLD 197 REACTIONS
GOLD 197 TARGET
LIMITING FRAGMENTATION