Total cross sections for positron and electron scattering from pyrimidine

被引：49

作者：

Zecca, A. ^{[1
]}

Chiari, L. ^{[1
]}

Garcia, G. ^{[2
]}

Blanco, F. ^{[3
]}

Trainotti, E. ^{[1
]}

Brunger, M. J. ^{[4
]}

机构：

[1] Univ Trento, Dept Phys, I-38123 Povo, Trento, Italy

[2] CSIC, Inst Matemat & Fis Fundamental, E-28006 Madrid, Spain

[3] Univ Complutense, Fac Ciencias Fis, Dept Fis Atom Mol & Nucl, E-28040 Madrid, Spain

[4] Flinders Univ S Australia, Sch Chem & Phys Sci, ARC Ctr Antimatter Matter Studies, Adelaide, SA 5001, Australia

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2010年 / 43卷 / 21期

关键词：

IONIZATION POTENTIALS; PHOTOELECTRON-SPECTRA; IMAGINARY PART; ENERGY-LOSS; MOLECULES; STATES; POLARIZABILITIES; SIMULATION; TRACKS; MODEL;

D O I：

10.1088/0953-4075/43/21/215204

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper we report original measurements of total cross sections for positron scattering from the important biomolecule pyrimidine. The energy range of these measurements was 0.3-45 eV, while the energy resolution was similar to 260 meV. In addition, we report theoretical results, calculated within the independent atom-screened additivity rule (IAM-SCAR) formalism, for the corresponding electron impact total cross sections. In that case the energy range is 1-10 000 eV. Total cross sections are very important input data for codes that seek to simulate charged-particle tracks in matter, as they define the mean-free path between collisions. As the present data and computations are to the best of our knowledge the first total cross sections to be reported for either positron or electron scattering from pyrimidine, they fill an important void in our available knowledge in the literature.

引用

页数：5

共 48 条

[1] GEANT4-a simulation toolkit [J].

Agostinelli, S ;

Allison, J ;

Amako, K ;

Apostolakis, J ;

Araujo, H ;

Arce, P ;

Asai, M ;

Axen, D ;

Banerjee, S ;

Barrand, G ;

Behner, F ;

Bellagamba, L ;

Boudreau, J ;

Broglia, L ;

Brunengo, A ;

Burkhardt, H ;

Chauvie, S ;

Chuma, J ;

Chytracek, R ;

Cooperman, G ;

Cosmo, G ;

Degtyarenko, P ;

Dell'Acqua, A ;

Depaola, G ;

Dietrich, D ;

Enami, R ;

Feliciello, A ;

Ferguson, C ;

Fesefeldt, H ;

Folger, G ;

Foppiano, F ;

Forti, A ;

Garelli, S ;

Giani, S ;

Giannitrapani, R ;

Gibin, D ;

Cadenas, JJG ;

González, I ;

Abril, GG ;

Greeniaus, G ;

Greiner, W ;

Grichine, V ;

Grossheim, A ;

Guatelli, S ;

Gumplinger, P ;

Hamatsu, R ;

Hashimoto, K ;

Hasui, H ;

Heikkinen, A ;

Howard, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303

[2] Geant4 developments and applications [J].

Allison, J ;

Amako, K ;

Apostolakis, J ;

Araujo, H ;

Dubois, PA ;

Asai, M ;

Barrand, G ;

Capra, R ;

Chauvie, S ;

Chytracek, R ;

Cirrone, GAP ;

Cooperman, G ;

Cosmo, G ;

Cuttone, G ;

Daquino, GG ;

Donszelmann, M ;

Dressel, M ;

Folger, G ;

Foppiano, F ;

Generowicz, J ;

Grichine, V ;

Guatelli, S ;

Gumplinger, P ;

Heikkinen, A ;

Hrivnacova, I ;

Howard, A ;

Incerti, S ;

Ivanchenko, V ;

Johnson, T ;

Jones, F ;

Koi, T ;

Kokoulin, R ;

Kossov, M ;

Kurashige, H ;

Lara, V ;

Larsson, S ;

Lei, F ;

Link, O ;

Longo, F ;

Maire, M ;

Mantero, A ;

Mascialino, B ;

McLaren, I ;

Lorenzo, PM ;

Minamimoto, K ;

Murakami, K ;

Nieminen, P ;

Pandola, L ;

Parlati, S ;

Peralta, L .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2006, 53 (01) :270-278

[3] PENELOPE - AN ALGORITHM FOR MONTE-CARLO SIMULATION OF THE PENETRATION AND ENERGY-LOSS OF ELECTRONS AND POSITRONS IN MATTER [J].

BARO, J ;

SEMPAU, J ;

FERNANDEZVAREA, JM ;

SALVAT, F .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1995, 100 (01) :31-46

[4] IONIZATION POTENTIALS OF BIOLOGICAL MOLECULES [J].

BERGMANN, ED .

ANNALS OF THE NEW YORK ACADEMY OF SCIENCES, 1969, 158 (A1) :140-&

[5] TOTAL CROSS-SECTIONS FOR ELECTRON-SCATTERING FROM N2 AND HE [J].

BLAAUW, HJ ;

HEER, FJD ;

WAGENAAR, RW ;

BARENDS, DH .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1977, 10 (08) :L299-L303

[6] MICROWAVE SPECTRUM, DIPOLE MOMENT, AND NUCLEAR QUADRUPOLE COUPLING CONSTANTS OF PYRIMIDINE [J].

BLACKMAN, GL ;

BROWN, RD ;

BURDEN, FR .

JOURNAL OF MOLECULAR SPECTROSCOPY, 1970, 35 (03) :444-&

[7] Improvements on the quasifree absorption model for electron scattering -: art. no. 022701 [J].

Blanco, F ;

García, G .

PHYSICAL REVIEW A, 2003, 67 (02) :9

[8] Screening corrections for calculation of electron scattering differential cross sections from polyatomic molecules [J].

Blanco, F ;

García, G .

PHYSICS LETTERS A, 2004, 330 (3-4) :230-237

[9] Improvements on the imaginary part of a non-empirical model potential for electron scattering (30 to 10000 eV energies) [J].

Blanco, F ;

García, G .

PHYSICS LETTERS A, 2002, 295 (04) :178-184

[10] A screening-corrected additivity rule for the calculation of electron scattering from macro-molecules [J].

Blanco, F. ;

Garcia, G. .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2009, 42 (14)

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