Exclusive measurements of mean pion multiplicities in 4He-nucleus reactions from 200 to 800 MeV/nucleon.
Mean multiplicities of pi+ and pi- in 4He collisions with C, Cu, and Pb at 200, 600, and 800 MeV/u, and with C and Pb at 400 MeV/u have been measured using the large solid angle detector Diogene.  The independence of pion multiplicity on projectile incident energy, target mass and proton multiplicity is studied in comparison with intra-nuclear cascade predictions.  The discrepancy between experimental results and theory is pointed out and discussed.
L'Hôte
D
D
DPhN, CEN Saclay, Gif sur Yvette, France.
Alard
J P
JP
Augerat
J
J
Babinet
R
R
Brochard
F
F
Fodor
Z
Z
Fraysse
L
L
Girard
J
J
Gorodetzky
P
P
Gosset
J
J
Laspalles
C
C
Lemaire
M C
MC
Lucas
B
B
Montarou
G
G
Parizet
M J
MJ
Poitou
J
J
Racca
C
C
Schimmerling
W
W
Tamain
J C
JC
Terrien
Y
Y
Valero
J
J
Cugnon
J
J
Vandermeulen
J
J
D002244:Carbon; D003300:Copper; D004735:Energy Transfer; D006371:Helium; D007477:Ions; D007854:Lead; D008651:Mesons; D008962:Models, Theoretical; D009010:Monte Carlo Method; D009686:Nuclear Physics; D011522:Protons; D011874:Radiometry
D007477:Ions; D011522:Protons; D006371:Helium; D007854:Lead; D002244:Carbon; D003300:Copper