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STUDY OF THE HEAVY ION INTERACTIONS OF (14.0 MeV/U) 208 Pb WITH208 Pb AND 197 AU USING MICA AND CN-85 AS SOLID STATE NUCLEAR TRACK DETECTORS

Khattak, Falak Naz (2002) STUDY OF THE HEAVY ION INTERACTIONS OF (14.0 MeV/U) 208 Pb WITH208 Pb AND 197 AU USING MICA AND CN-85 AS SOLID STATE NUCLEAR TRACK DETECTORS. PhD thesis, Gomal University, D.I. Khan.

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Abstract

Aim of this research work was to study different features of Heavy Ion interaction of (l4.0MeV/u) 208Pb with 208Pb and 208Pb with 197 Au. In this study the technique of Solid State Nuclear Track Detection (SSND) has been employed, sing mica and CN-85 detectors. This technique was selected because of its low cost and the available facilities. Mica samples were prepared in Germany and CN-85 in France. These samples were then irradiated with 14.0 MeV/u 208Pb ions at UNILAC (GSI), Darmstadt, F.R. Germany. The detectors, after removing the target materials from them, were etched in SSNTD Laboratory, Physics Department Gomal University, Dera Ismail Khan Pakistan, to reveal the latent tacks of the reaction products and the un interacted projectiles. Various parameters of events, registered in the detectors, were measured using research optical microscope, at a suitable magnification. Depths of the end points of etched tracks were measured with the help of Linear Displacement Transducer (LDT) attached with the stage of microscope. Using the determined parameters the reaction cross-sections and other reaction parameters were calculated both from elastic data as well as from quarter point angles using the elastic data, in each of the reactions. Masses, energies, relative velocities, out of plane and in plane angles of the fragments in different multiplicities were determined, using computer code. From the partial reaction cross- sections it was concluded that a sufficient number of intermediate mass fragments have emitted along with the heavy fragments in both the reactions. These results, in turn, were used to construct the intermediate stage of the reactions. Mass transfer, total kinetic energy loss, angle of scattering with respect to the beam direction in laboratory frame of reference and in centre of mass frame of reference and finally the angles of the fission fragments, both in the plane and out of plane of the reaction, emitted in the second stage of the reaction were also determined.

Item Type:Thesis (PhD)
Uncontrolled Keywords:Solid state nuclear track Detectors, Dera Ismail Khan, Nuclear Reaction, Heavyion, 208Pb, 197 Au, Solid State Nuclear Track Detection (SSND), Elastic data, Masses, Energies, Relative velocities, Plane angles, Fission fragments,
Subjects:Physical Sciences (f) > Physics(f1) > Nuclear Physics (f1.7)
ID Code:187
Deposited By:Mr Ghulam Murtaza
Deposited On:16 Jun 2006
Last Modified:22 Jan 2009 21:09

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