بسم الله الرحمن الرحيم

اقرأ باسم ربك الذى خلق

خلق اإلنسان من علق

اقرأ وربك األكرمالذى علم بالقلم

علم اإلنسان ما لم يعلم

JINR-FLNR-COMBAS

Reproduce experimental velocity distribution of He6, He8 and Li9 isotopes obtained in the reaction

B11(33AMev) + Al27(17mg/cm2)

ByBarakat Ali Mahmoud

Samah Ibrahim Radwan

supervisors Erdemchimeg Batchuluun

Artukh A.G.

Summer School Oct.19-Nov.62009

Comparison of fragment separators

Device [msr] p/p [%] Max .[Tm] Res.power

LISE 1.0 5.0 3.2 800

FRS 0.7-2.5 2.0 9-18 240-1500

A1200 0.8-4.3 3.0 5.4 700-1500

RIPS 5.0 6.0 5.76 1500

COMBAS 6.4 20 4.5 4360

COMBAS“Complex Fast Operating Analyzed Separator”

Separator Design

The main scheme of COMBAS

Degrader

Magneto-optical sketch of COMBAS

Simulations in program Lise++

The program is intended to calculate the transmission and yields of fragments produced and collected in a fragment separator. It allows to simulate the production of radioactive beams, from the parameters of the reaction mechanism to the detection of products selected by the fragment separator.

Experimental Data

Analysis of experimental data

Conclusion

• The COMBAS separator can be used efficiently in the mode of a high-resolving spectrometer to study reaction mechanisms and in the mode of an in-flight separator in experiments and to study of properties of short lived exotic nuclei near the drip-lines.

• Producing and forming high intensity nuclear beams, this permits one to study the boundary of the particle stability in the light element range (Z≤30) and to start the systematic study of the structure of exotic nuclei and nuclear states with extreme N/Z value.