Absolute total and partial cross sections for ionization of nucleobases by proton impact in the Bragg peak velocity range

Journal Article · Sun Aug 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.022703· OSTI ID:21448500

Tabet, J; Eden, S; Feil, S; Abdoul-Carime, H; Farizon, B; Farizon, M; Ouaskit, S; Maerk, T D ^[1]

---

1. Universite de Lyon, F-69003, Lyon, France Universite Lyon 1, Villeurbanne, France, and CNRS/IN2P3, UMR5822, Institut de Physique Nucleaire de Lyon, F-69622, Villeurbanne (France)

We present experimental results for proton ionization of nucleobases (adenine, cytosine, thymine, and uracil) based on an event-by-event analysis of the different ions produced combined with an absolute target density determination. We are able to disentangle in detail the various proton ionization channels from mass-analyzed product ion signals in coincidence with the charge-analyzed projectile. In addition we are able to determine a complete set of cross sections for the ionization of these molecular targets by 20-150 keV protons including the total and partial cross sections and the direct-ionization and electron-capture cross sections.

• OSTI ID: 21448500
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ADENINES
AMINES
ANTIMETABOLITES
AROMATICS
AZAARENES
AZINES
BARYONS
BRAGG CURVE
CAPTURE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
CYTOSINE
DIAGRAMS
DRUGS
ELECTRON CAPTURE
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONIZATION
IONS
KEV RANGE
MOLECULAR IONS
MOLECULE COLLISIONS
NUCLEONS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PROTONS
PURINES
PYRIMIDINES
THYMINE
TOTAL CROSS SECTIONS
URACILS