New Gammaspectroscopy system for Nuclear Resonance Fluorescence at

New Gamma-spectroscopy system for Nuclear Resonance Fluorescence at Turkish Accelerator and Radiation Laboratory Dr. Haris Ðapo Ankara University Institute of Accelerator Technologies, TARLA

Outline Bremsstrahlung at TARLA Nuclear resonace flouresence (NRF) Potential experiment: – Angular correlations measurements – Cross section measurements Other applications Feb 27, 2020 H. Ðapo, Nuclear Physics @ TARLA 2

TARLA Electron Linear Accelerator Nuclear Experiment Station TARLA Linac Ebeam = 0 -40 Me. V Max Ie = 1. 5 m. A Micropulse duration = 0. 5 -6 ps Micropulse repetition= 26 MHz/2 n Ebremssrrahlung = 0 -30 Me. V Sep 4, 2018 H. Ðapo, Nuclear Physics @ TARLA 3

TARLA Nuclear Physics experimental station From monochromatic electron spectrum one produces a contintinous “white” photon spectrum High photon intensities possible Sep 4, 2018 H. Ðapo, Nuclear Physics @ TARLA 4

Photonuclear Reactions

Nuclear Resonance Fluorescence

Theory background for NRF

Transition strength

Angular distribution

Angular distribution – unpolarized beam

Energy integrated cross section

Photon scattering using Bremsstrahlung

From spectra to cross sections Number of detected reactions:

NRF experiment (our setup) Proposed setup would consist of: - 2 Clover HPGe (with BGO) - 2 Single crystal HPGe (with BGO) - 4 Large Volume La. Br 3 HPGe would be 45 o relative to the beam and 90 o to each other La. Br 3 would 90 o relative to the beam and 90 o to each other Current status: Detector bid pending

Dipole photonesponse of atomic nuclei

Potential discoveries

Other applications of the bremsstrahlung beam - Giant Resonances - Photodisintegration - Photofission - Industrial applications In addition experiments and applications with direct electron beam use will also be possible.

Summary - NRF at TARLA - Use of the bremsstrahlung station - New Gamma-spectroscopy system - NRF method: intrinsic level properties (width, spin, parity) - observables (cross section, angular distribution) - Discoveries: E 1 response, neutron skin, equation of state, nucleosynthsis, neutron stars