8th International Topical SPARC Workshop
and SPARC Lecture Days
Moscow, September 5-10, 2011 -
Information

Title:	Dr.
Family Name:	Nandi
First Name:	Tapan
Gender:	male
E-Mail:	nanditapangmail.com
Affiliation for Badge:	Nuclear Science Centre, New Delhi
Institute:	Inter-university Accelerator Centre
Address (Street):	Aruna Asaf Ali Road, JNU New Campus
Postal Code, City:	New Delhi 110067
Country:	India
Phone:	911126893955
Fax:	911126893666
Arrival Date:	September 5
Departure Date:	September 10
Type of Participation:	Regular
Are you a member of the SPARC collaboration ?:	No
I register for:	Both
	Selected
Contribution Type:
Author(s):	T. Nandi1, B.J.Roy2, Biraja Mohanty3, Mumtaz Oswal3, Sunil Kumar3, Akhil Jhingan1 , V. Jha2, D.C. Biswas2, Varinderjit Singh3, and R.K.Choudhury2
Institute(s):	1Inter-University Accelerator Centre, New Delhi-110 067, India. 2Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai-400085, India 3Department of Physics, Panjab University, Chandigarh - 160014, India
Title:	Fully stripped ion formations in nuclear reaction
Abstract:	As evident from our work [1] that the projectile like ions are most likely formed in the fully stripped charged state. Also in another study [2] it is observed that the ions do capture up to circular Rydberg states only in the H-like ions while passing through the target. It can be noted here that no Rydberg states can survive while passing through a solid matrix indicating that they can only be formed at the exit surface [1,2]. This demands that the starting ion must be a fully stripped ion. In order to substantiate it, several measurements were done recently in the direct as well as inverse kinematics. For the direct kinematic experiments, 12C beams of energies in the range of 45-70 MeV were bombarded on enriched target of 56Fe. Elastic events and light particles were detected using silicon surface barrier detectors in E-E telescope [3] while X-ray spectra from the target like particles were recorded by a low energy germanium detector using a suitable X-ray absorber. Iron K and K lines observed due to the K-shell vacancy creations by ion impact however the x-ray lines from target like ions such as Ni and Ga are originated from Ly and Ly- structures; no K and K lines belonging to Ni and Ga have been noticed at all. In the inverse kinematic experiments 173 & 175 MeV 58Ni beam were bombarded on the natural carbon target and X-ray spectra obtained from this experiment display X-ray lines from H- and He-like Zn and As ions producing from a-transfer reaction and p-evaporation residues, respectively.

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