1. Electron Spectrometry of Highly Charged Ions: Exploring the collision dynamics of few-electron systems Electron Spectrometry of Highly Charged Ions: Exploring the collision dynamics of few-electron systems NuSTAR Demokritos - Athens Feb 2, 2015 Theo J.M. Zouros University of Crete Atomic Collisions & Electron Spectrometry Laboratory

2. Basic ion-atom collision processes Demokritos - Athens Feb 2, 2015 continuum K L M K capture K-M excitation E a - Auger energy KLM Auger transition e-e interaction Atomic Energy levels K ionization Atomic Structure: q, Z p, Z t, E x, E a … Collision Dynamics: b, V p, v t … Cross section: Few HCI: Few-electrons much simpler environment for testing theories Special interest: Two-electron processes, electron correlations and deviations from the independent particle model M-K radiative transition ExEx VpVp ZpZp ZtZt b e-e- e-e- Ion-atom collision vtvt Projectile Ion Charge q+ Target Atom

3. Interest in HCIs Basic understanding of atomic collision processes (simpler systems, isoelectronic studies) High-Z HCI used to test QED corrections (spectroscopy) Astrophysical plasmas (Solar Corona etc.) Fusion research (ionization, recombination - plasma edge modeling, plasma-wall interactions, diagnostics - JET, ITER) Cometary X-ray emission (Charge-exchange of solar wind HCIs with cometary vapors) Radiation damage, Therapy of deep-seated localized tumors (energy loss, HCI bombardment of sensitive areas (brain, eye), narrow Bragg peak) HCI nano-structuring of surfaces (nano-hillock formation, potential sputtering, ITSLEIF EU-network) Guiding of HCI in insulator nano-capillaries (ITSLEIF) Accelerator physics (source development, lifetime of particle beams in storage rings) Instrumentation R & D Demokritos - Athens Feb 2, 2015

4. Atomic Collision and Electron Spectrometry Laboratory: Interests and Activities Investigation of basic atomic collision mechanisms Determination of absolute state-selective cross sections Zero-degree Auger Projectile Spectrometry (ZAPS) Charge particle optics – development and modeling of electron spectrometers Demokritos - Athens Feb 2, 2015 Main Interests THALES 2011-2015: APAPES University of Crete Tandem Laboratory – INPP Demokritos University of Ioannina University of Salonika 600k€ - experiment at 5 MV Tandem Atomic Physics with Accelerators: Projectile Electron Spectroscopy

5. Demokritos - Athens Feb 2, 2015 APAPES: First publication!

6. Demokritos - Athens Feb 2, 2015 http://apapes.physics.uoc.gr/

7. Demokritos - Athens Feb 2, 2015 APAPES: New beam line for atomic physics Zero-degree Auger projectile spectrograph

8. New ZAPS setup: Single stage 0 0 HDA with injection lens and 2-D position sensitive detector Demokritos - Athens Feb 2, 2015 APAPES (2015) HCI Target gas n t ~10 12 #/cm 3 Differential Pumping ports Focusing and retardation Chamber pressure ~10 -7 Torr Overall efficiency gain ~ 200-500 High Transmission ~ 90% Paracentric entry

9. Demokritos - Athens Feb 2, 2015 2-D image on PSD Projections APAPES

10. Demokritos - Athens Feb 2, 2015 Thank you – good luck NuStar!