Preliminary results of MAYA-ITO

H. Alvarez, A. Cassimi, D. Cortina-Gill, L. Gaudefroy, W. Mittig, G. Mukherjee, P. Roussel-Chomaz, C. Spitaels, A. Villari

Study of heavy-ion interaction with matter

List of ions / gas measured:

78Kr 10.4 MeV/n He, Ne, Ar, Xe78Kr 1.9 MeV/n He, Ne, 48Ca 8.9 MeV/n He, Ne, Ar, Xe13C 4.35 MeV/n He, Ne, Ar, Xe, IsoBut,H,D13C 11.06 MeV/n Xe, IsoBut36S 3.92 MeV/n He, Ne, Ar, Xe, IsoBut,H,D36S 11.32 MeV/n He, Ne, Ar, Xe, IsoBut,H,D208Pb 4.5 MeV/n Ar, IsoBut 16O 10 MeV/n He, Ne, Ar, Xe, IsoBut,H,D

Analysis still in progress !!

Example of results

(a) Ion: 13C 4.35 MeV/n ( ~ 56 MeV after the 1.5 m myler window)

Gas (STP)

[mg/cm3] Pressure [mbar]

Inflexion point [mm]

(Expt.)

Inflexion point [mm]

(SRIM]

Range [mm]

(SRIM)

Ne 0.9 1500 120.9 1156 123.2 Ne 0.9 1860 97.0 93.2 99.4 Ar 1.78 710 162.9 152.’ 161.5 Ar 1.78 1005 114.1 107.7 114.1 Xe 5.85 500 108.6 127.3 110.6

Isobutane 2.59 500 81.6 126.0 75.2 H2 0.09 1800 126.8 (?) 252.0 260.6 D2 0.18 1800 149.22 248.8 259.5 D2 0.18 1950 137.6 229.7 239.6 He 0.18 1900 173.4 295.3 302.9

(b) Ion: 13C 11.06 MeV/n ( ~ 144 MeV after the 1.5 m myler window)

Gas (STP)

[mg/cm3] Pressure [mbar]

Range [mm] (Expt.)

Range [mm] (SRIM)

Xe 5.85 1500 153.8 149.2 Isobutane 2.59 1880 105.7 98.2

(c) Ion: 36S 11.32 MeV/n ( ~ 407 MeV after the 1.5 m myler window)

Gas (STP)

[mg/cm3] Pressure [mbar]

Range [mm]

(Expt.)

Inf. Point SRIM

Range [mm] (SRIM)

Ar 1.78 1700 163.5 151.5 155.8 Xe 5.85 1000 130.4 115.5 119.2

Isobutane 2.59 1300 78.8 71.99 74.23 Isobutane 2.59 710 150.0 133.34 135.9

(d) Ion: 36S 3.92 MeV/n ( ~ 141 MeV after the 1.5 m myler window)

Gas (STP)

[mg/cm3] Pressure [mbar]

Inf point [mm]

(Expt.)

Inf point SRIM

Range [mm] (SRIM)

Ne 0.9 1000 94.8 109.1 Ar 1.78 600 110.8 111.2

Isobutane 2.59 220 100.5 88.35 96.2 Isobutane 2.59 100 > 179.3 194.3 211.6

H2 0.09 1795 135.4 131.7 146.6 D2 0.18 1695 135.8 137.7 154.6 He 0.18 2010 149.2 151.2 166.1

78Kr (10.4 MeV/u) in Ar

P=1690mbar P=1000mbar

P=300mbarSRIM03

78Kr (10.4 MeV/u) in Xe

P=602 mbar P=795 mbar

P=1292 mbar

78Kr (1.9 MeV/u) in He

P=990 mbar P=1700 mbar

78Kr (1.9 MeV/u) in Ne

P=300 mbar

48Ca (8.9 MeV/u) in Ar

P=1100mbar P=1400mbar

48Ca(8.9 MeV/u) in Xe

P=490 mbar P=535 mbar

Range of 48Ca (8.9 MeV/u) in Ar

(mg/cm2)

SUMMARY

Range Kr in Ar Kr in Xe(mg/cm2)__________________________________________________________________________NS 33.3 52.4 SRIM 27.8 42.1exp 30.8 (1.5) 47.1 (2.5)___________________________________________________________________________

Ca in Ar Ca in Xe___________________________________________________________________________NS 27.8 43.6SRIM 31.3 48.0exp 34.7(1.7) 55.9(2.8)