| Zugriffsnummer | 35111 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Cross sections for the ionization of tetrahydrofuran by light ions |
| Autor(in); Institution |
Wang, Mingjie; 6.6, Strahlenwirkung, PTB-Braunschweig
Rudek, Benedikt; 6.6, Strahlenwirkung, PTB-Braunschweig
Buhr, Ticia; 6.6, Strahlenwirkung, PTB-Braunschweig
Bennett, Daniel; 6.6, Strahlenwirkung, PTB-Braunschweig
Hilgers, Gerhard; 6.6, Strahlenwirkung, PTB-Braunschweig
Rabus, Hans; 6.6, Strahlenwirkung, PTB-Braunschweig
|
| Quelle/Jahr | Journal of Physics: Conference Series: 635 (2015), 1 S. |
| Artikelnummer | 032050 |
| ISSN | 1742-6588 (PRINT) ; 1742-6596 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP |
| Konferenzangaben | XXIX International Conference on Photonic, Electronic and Atomic Collisions, Toledo, 22-28, July, 2015, Spain |
| Freie Schlagworte | BioQuaRT ; DNA ; ionization cross sections ; light ions ; tetrahydrofuran |
| Zusammenfassung | Within the framework of the EMRP Joint Research Project "BioQuaRT" [1], a multi-scale track structure simulation program based on interaction cross sections of DNA constituents was developed. As a prerequisite, ionization cross sections for model molecules representing DNA constituents have been determined. In the present work, double differential cross sections (DDCS) for ionization of tetrahydrofuran (THF) by proton and helium-ion impact were measured. The experiments were performed at the PTB ion accelerator facility (Braunschweig, Germany) using monoenergetic protons with energies between 0.3 MeV and 3 MeV and He + ions of 1.66 MeV. The emitted electrons were detected with an electrostatic hemispherical electron spectrometer. The secondary electron spectra were measured at observation angles between 15° and 150° in 15° steps relative to the direction of the incident particles. These spectra were converted into absolute cross sections using the collected electron spectra from the collision of 400 eV electrons with THF by referring to previously published cross section data for ionization of THF by electrons [2]. The experimental DDCS are compared with the modified Hansen-Kocbach-Stolterfoht (HKS) model [3] and the recently reported calculation based on the dielectric response function (DRF) formalism [4]. [1] Project web site: http://www.ptb.de/emrp/bioquart.html [2] W. Y. Baek et al., Phys. Rev. A 86, 032702 (2012) [3] M. A. Bernal et al., Nucl. Instrum. Meth. B 251, 171 (2006) [4] P. de Vera et al., Phys. Rev. Lett. 114, 018101 (2015) |
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