Collisions of ions with atoms molecules and surfaces: Higher-order processes

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Details of project

Identifier

46905

Type

Principal investigator

Sulik, Béla

Title in Hungarian

Ionok ütközése atomokkal, molekulákkal és felületekkel: magasabbrendű folyamatok

Title in English

Collisions of ions with atoms molecules and surfaces: Higher-order processes

Panel

Physics 1

Department or equivalent

Experimental molecular physics research group (HUN-REN Institute for Nuclear Research)

Participants

Berényi, Dénes
Biri, Sándor
Buhr, Ticia
Gulyás, László
Orbán, Andrea

Starting date

2004-01-01

Closing date

2008-12-31

Funding (in million HUF)

7.184

FTE (full time equivalent)

0.00

state

closed project

Final report

Results in Hungarian

Ionok és atomok illetve molekulák ütközéseiben megmutattuk, hogy kis (1-100 keV/nukleon) ionenergiákon a többszörös elektronszórási folyamat (az un. Fermi-shuttle mechanizmus) járuléka elérheti a teljes elektron-emisszió 5-10 százalékát, és a nagyenergiás elektronok ki-bocsátásában ez a folyamat meghatározó lehet. A hidrogénmolekula ionizációjában magasabb rendben fellépő interferenciajelenségek közül pontosan megmértük a másodrendű folyamat járulékának szögeloszlását. Találtunk egy magasabb frekvenciájú komponenst is, melynek értelmezése egyenlőre nyitott kérdés. Ion-molekula ütközésekben megmértük a kilépő molekula-fragmentumok szög és energia-eloszlását, és értelmeztük annak anizotróp jellegét. Az ion-felület kölcsönhatások területén a szigetelő fóliákban kialakított nanokapillárisok un. ionterelő hatását vizsgálatuk. Felépítettük az ehhez szükséges mérőberendezést, majd elsőként kimutattuk és megmértük alumíniumoxid nanokapilláris minták ionterelő képességét. Elemeztük a lítiumszerű lövedékionokon végbemenő kételektronos, un. transzfer-loss folyamatot. Megmutattuk, hogy egy metastabil kvartett állapot keltési hatáskeresztmetszetét a lövedék magasabb héjaira befogódó elektronok teljes hozama szabja meg, amivel megmagyaráztuk egy anomálisan nagynak tekintett hatáskeresztmetszet eredetét.

Results in English

It has been shown in collisions of ions with atoms and molecules that at low ion energies (1-100 keV/u), the contribution of the multiple electron scattering sequences (the so called Fermi-shuttle mechanism) may amount of 5-10% of the total electron emission. Morover, this process can be dominant in the emission of high energy electrons. Studying the higher order interference effects in the ionization of the hydrogen molecule, we accurately measured the angular distribution of the second order component. A higher frequency contribution has also been found, which has no evident interpretation yet. We measured the angular and energy distribution of molecular fragments in ion-molecule collisions, and provided an interpretation for its anisotropic properties. In the field of ion-surface interaction, we studied the ion-guiding ability of the nanocapillaries formed in foils of isolating materials. We have constructed the measuring apparatus. We determined first time the ion guiding properties of capillary samples formed in anodic alumina. We analyzed the transfer-loss process (a two-electron transition) on lithium like projectile ions. We have shown that the production cross section of a metastable quartet state is deter-mined by the capture yield to all the higher n shells of the projectile. This fact explained the anomaly of a „too large” measured cross section.

Full text

http://real.mtak.hu/1620/

Decision

Yes

List of publications

B. Seredyuk, R. W. McCullough, H. Tawara, H B Gilbody, D. Bodewits, R. Hoekstra, P. Sobocinski, D. Pesic, R. Hellhammer, B. Sulik, N. Stolterfoht, O. Abu-Haija and E.Y. Kamber: Charge exchange and dissociative processes in collisions of slow He2+ ions with H2O molecules, Physical Review A 71, 022705, 2005

P. Sobocinski, Z. D. Pesiæ, R. Hellhammer, N. Stolterfoht, J.-Y. Chesnel, S. Legendre, and B. Sulik: Fragmentation of H2O molecules following interaction with slow He2+ ions (a cikkből kimaradt az Acknowledgment), Nucl. Instr. Meth. B 233, 207, 2005

T. Ricsóka Gy. Víkor, Sz. Nagy, K. Tőkési, Z. Berényi, B. Paripás N. Stolterfoht and B. Sulik: Accelerating multiple scattering of the emitted electrons in collisions of ions with atoms and molecules, XXIV Internat. Conf. on Photonic, Electronic and Atomic Collisions, July 2005, Rosario, Argentina, Abstracts of Contributed Papers, ed. F. D. Colavecchia et al, p 436, 2005

N. Stolterfoht, R. Hellhammer, P. Sobocinski, J. Bundesmann, B. Sulik, M. Shah, K. Dunn J. Pedragosa and R.W. McCullogh: Guiding of slow neon and molecular hydrogen ions through nanocapillaries in a PET polymer, Abstracts of the 12th International Conference of Highly Charged Ions, ed. Z. Rudzikas, EPS Conferences 28E, p 7, 2005

P. Sobocinski, Z. D. Pesiæ, R. Hellhammer, J.-Y. Chesnel, B. Sulik and N. Stolterfoht: Absolute cross sections for the fragmentation of H2O Molecules following the interaction with slow He2+ ions (a kiadványban nincs köszönetnyilvánítási lehetőség), Program and Abstracts Book of the 8th Workshop on Fast Ion-Atom Collisions, Sept. 1-3, 2004, Debrecen, Hungary, ed. A. Orbán, p. 65., 2004

R. Hellhammer, Z. D. Pesiæ, P. Sobocinski, J. Bundesmann, D. Fink, B. Sulik and N. Stolterfoht: Guided transmission of highly charged ions trough nanocapillaries in PET: study of the energy dependencies (a kiadványban nincs köszönetnyilvánítási lehetőség), Program and Abstracts Book of the 8th Workshop on Fast Ion-Atom Collisions, Sept. 1-3, 2004, Debrecen, Hungary, ed. A. Orbán, p. 71., 2004

T. J. M. Zouros, B. Sulik, L. Gulyás and A. Orbán: Production of projectile 1s2s2p 4P states by transfer-loss in collisions of O(5+) and F(6+) ions with H2 and He targets, J. Phys. B 39, L45-L52, 2006

K Tőkési, B. Sulik and N. Stolterfoht: Fermi-shuttle type multiple electron scattering in atomic collisions: Low impact energies, XXIV Internat. Conf. on Photonic, Electronic and Atomic Collisions, July 2005, Rosario, Argentina, Abstracts of Contributed Papers, ed. F. D. Colavecchia et al, p 440, 2005

K Tőkési, B. Sulik, N. Stolterfoht, T. Ricsóka, Gy. Víkor, Sz. Nagy, Z. Berényi, R. Hellhammer, Z. Pesic and D. Berényi: Fermi-shuttle processes in the electron emission by ion impact: low and medium energies, Third Conference on the Elementary Processes in Atomic Systems, 31 Aug - 2 Sept, 2005, Miskolc, Hungary, Book of Abstracts, ed. B. Paripás, p. 43, 2005

T. J. M. Zouros, B. Sulik, A. Orbán and L. Gulyás: Investigation of transfer-loss in energetic collisions of O(5+) and F(6+) ions with H2 and He targets, Brasilian Journal of Physics 36, No. 2b, 505, 2006

B. Sulik: Ionization Processes by Ion Impact: the Role of Multiple Electron Scattering, The April Meeting of the American Physical Society, April 16-19, 2005, Tampa, Florida, Abstract in the Bulletin of APS, Vol. 50, p. 130, 2005

B. Sulik, T. Ricsóka, F. Gáll and N. Stolterfoht: Fragmentation of CH4 and H2O molecules following 800 keV He+ impact: First results, RADAM Conference 2005 (Radiation Damage in Biomolecular Systems, 17-20 March 2005, Potsdam, Germany, Book of Abstracts, p 66, 2005

B. Sulik, K. Tőkési and N. Stolterfoht: Electron emission near the Bragg peak: the contribution of fast electrons accelerated by multiple electron scattering, RADAM Conference 2005 (Radiation Damage in Biomolecular Systems, 17-20 March 2005, Potsdam, Germany, Book of Abstracts, p 67, 2005

B. Sulik, T. Ricsóka, F. Gáll and N. Stolterfoht: Fragmentation of CH4 and H2O molecules following 800 keV He+ impact, XXIV Internat. Conf. on Photonic, Electronic and Atomic Collisions, July 2005, Rosario, Argentina, Abstracts of Contributed Papers, ed. F. D. Colavecchia et al, p 553, 2005

Juhász Z, Víkor Gy, Biri S, Fekete É, Iván I, Tőkési K, Takács E, Pálinkás J, Mátéfi-Tempfli S, Mátéfi-Tempfli M, Piraux L, Stolterfoht N, Sulik B: Guiding of slow Ne6+ ions through A1203 capillaries, 13th International Conference on the Physics of Highly Charged Ions, 28 Aug. - 1 Sept., 2006, Belfast, Northern Ireland, UK, (Talk, Book of abstracts: p. 3-8), 2006

Juhász Z, Biri S, Fekete É, Iván I, Gáll LF, Tőkési K, Sulik B, Víkor Gy, Pálinkás J, Mátéfi-Tempfli S, Mátéfi-Tempfli M, Piraux L, Stolterfoht N: Guiding of slow Ne6+ ions through capillaries of anodic alumina, 22nd International Conference on Atomic Collisions in Solids, 21-26 July, 2006, Ber-lin, Germany, (Poster, Book of abstracts: p. 124), 2006

Juhász Z, Ricsóka T, Stolterfoht N, Sulik B: Fragmentation of H2O and CH4 molecules following 800 keV He+ impact, Radiation Damage in Biomolecular Systems. RADAM Conference, 6-9 June, 2006, Groningen, Netherlands, (Poster, Abstract in the conference booklet), 2006

Sulik B, Juhász Z, Ricsóka T, Stolterfoht N: Fragmentation of H2O and CH4 molecules in collisions with 800 keV He+, 13th International Conference on the Physics of Highly Charged Ions. 28 Aug. - 1 Sept., 2006, Belfast, Northern Ireland, UK, (Poster, Book of abstracts: p. 2-23), 2006

Sulik B, Juhász Z, Ricsóka T: Fragmentation of H2O and CH4 due to capture and ionization by ion impact: double differential proton emission spectra, International Workshop on Radiation Damage of Water, May 15-16, Saint Malo, France, (Invited talk, Paper in the conference booklet: pp. 9-11), 2006

B. Sulik and K. Tőkési: Fast Electron Emission in Multiple Scattering in Ion-Impact Ionization Processes, 19th International Conference on the Application of Accelerators in Research & Industry, Fort Worth, Texas, August 20 – 25, 2006 (Talk, Abstr. Book, TUE-AP10-4), 2006

B. Sulik and T. Mukoyama: Statistical treatment of many-electron transitions in ion-atom collisions, 19th International Conference on the Application of Accelerators in Research & Industry, Fort Worth, Texas, August 20 – 25, 2006 (Talk, Abstr. Book, TUE-AP04-2), 2006

B. Sulik, F. Frémont, J.-Y. Chesnel, A. Hajaji, Z. Juhász: Fragmentation of small molecules by highly charged ion impact: Anisotropic fragment emission and molecular asymmetries., Radiation Damage in Biomolecules Conference. Dublin, Ireland, 19-22 June, 2007 (Talk, Abstract No. WG2-B/2), 2007

Juhász Z., Víkor Gy., Biri S., Fekete É., Iván I., Tôkési K., Takács E., Mátéfi-Tempfli S., Mátéfi-Tempfli M., Piraux L., Pálinkás J., Sulik B.: Ion-insulator interactions inside ion-guiding nanocapillaries, 20th International Symposium on Ion-Atom Collisions. Agios Nikolaos, Crete, Greece, 1-4 Aug., 2007 (Inv. talk, Abstr.: p. 3, short abstract), 2007

F. Frémont, A. Hajaji, A. Naja, C. Leclercq, J. Soret, J. A. Tanis, B. Sulik, and J.-Y. Chesnel: Fast oscillating structures in electron spectra following He(q+)+He collisions (q=1,2) at low projectile energies, PHYSICAL REVIEW A 72, 050704 Rapid (2005), 2005

J.A. Tanis, S. Hossain, B. Sulik and N. Stolterfoht: Comment on ''Interference Effect in Electron Emission in Heavy Ion Coll. with H2 Detected by Comparison with the Meas. Electron Spectr. from Atomic Hydr.'', Phys. Rev. Lett. 95, 079301, 2005

K Tőkési, B. Sulik and N. Stolterfoht: Fermi-shuttle type multiple electron scattering in atomic collisions, Nucl. Instr. Meth. B 233, 187, 2005

Mátéfi-Tempfli S., Mátéfi-Tempfli M., Piraux L., Juhász Z., Biri S., Fekete É., Iván I., Gáll L. F., Sulik B., Víkor Gy., Pálinkás J., Stolterfoht N.: Guided transmission of slow Ne(6+) ions through the nanochannels of highly ordered anodic alumina, Nanotechnology 17, 3915, 2006

P. Sobocinski, Z. D. Pesic, R. Hellhammer, D. Klein, B. Sulik, J-Y. Chesnel and N. Stolterfoht: Anisotropic proton emission after fragmentation of H2O by multiply charged ions, J. Phys. B 39, 927, 2006

Tanis J. A., Chesnel J. -Y., Sulik B., Skogvall B. , Sobocinski P., Cassimi A., Grandin J. P., Adoui L., Hennecart D., Stolterfoht N.: Angular and high-frequency analysis of electron interference structures in ~60 MeV/u Kr(34+)+H2 collisions, Physical Review A 74, 022707, 2006

A. L. Godunov, Marco Kampp, B. Sulik, H.R.J. Walters, Colm T. Whelan: Coincidence Studies of Ionization Processes, Nucl. Instr. Meth. B 261 (2007) 222, 2007

B. Sulik, K Tőkési: Accelerating multiple scattering of electrons by ion impact: Contribution to molecular fragmentation and radioation damages, Advances in Quantum Chemistry 52, 253, 2007

B. Sulik, K Tőkési, N. Stolterfoht, T. Ricsóka, Gy. Víkor, Sz. Nagy, Z. Berényi, R. Hellhammer, Z. Pesic and D. Berényi: Fermi-shuttle processes in the electron emission by ion impact: Contribution to radiation damages, Rad. Phys. Chem. 26, 483, 2007

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