Absolute oscillator strengths for the valence-shell photoabsorption (2-200 eV) and the molecular and dissociative photoionization (11-80 eV) of nitrogen dioxide

被引:45
作者
Au, JW [1 ]
Brion, CE [1 ]
机构
[1] UNIV BRITISH COLUMBIA,DEPT CHEM,VANCOUVER,BC V6T 1Z1,CANADA
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1016/S0301-0104(97)00065-7
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The valence-shell photoabsorption spectrum and absolute differential oscillator strengths (cross sections) of nitrogen dioxide have been measured at 1 eV FWHM resolution from the visible up to the soft X-ray energy region (2-200 eV) using dipole (e, e) spectroscopy. The discrete spectral structures from 1.6 to 30 eV have also been studied at higher resolution (0.05 eV FWHM), and absolute oscillator strength values have been determined for the B-2(1) <-- (2)A(1) and B-2(2) <-- (2)A(1) systems as well as for thr Rydberg states at higher energies. Comparisons have been made to previously reported absolute optical measurements in those limited energy regions where such data exist. The accuracy of the absolute oscillator strengths of nitrogen dioxide have been critically evaluated by comparison of the static electric-dipole polarizability of nitrogen dioxide derived from the present data using the S(- 2) sum rule with those determined from dielectric constant measurements in the literature. In addition, dipole (e,e + ion) coincidence spectroscopy has been used to obtain the photoion branching ratios, absolute photoionization efficiencies, and absolute partial differential oscillator strengths for the molecular and dissociative photoionization channels of nitrogen dioxide from the first ionization threshold up to 80 eV. Some qualitative deductions have been made concerning the dipole-induced breakdown pathways of nitrogen dioxide under UV, VUV, and soft X-ray radiation.
引用
收藏
页码:109 / 126
页数:18
相关论文
共 88 条
[1]   NEW MEASUREMENTS OF THE NO2 ABSORPTION CROSS-SECTION IN THE 440-NM TO 460-NM REGION AND ESTIMATES OF THE NO2-N2O4 EQUILIBRIUM-CONSTANT [J].
AMORUSO, A ;
CRESCENTINI, L ;
FIOCCO, G ;
VOLPE, M .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1993, 98 (D9) :16857-16863
[2]   STEPWISE LASER PHOTO-IONIZATION OF MOLECULES IN A MASS-SPECTROMETER - NEW METHOD FOR PROBING AND DETECTION OF POLYATOMIC-MOLECULES [J].
ANTONOV, VS ;
KNYAZEV, IN ;
LETOKHOV, VS ;
MATIUK, VM ;
MOVSHEV, VG ;
POTAPOV, VK .
OPTICS LETTERS, 1978, 3 (02) :37-39
[3]   THE MOLECULAR AND DISSOCIATIVE PHOTOIONIZATION OF ETHANE, PROPANE, AND N-BUTANE - ABSOLUTE OSCILLATOR-STRENGTHS (10-80 EV) AND BREAKDOWN PATHWAYS [J].
AU, JW ;
COOPER, G ;
BRION, CE .
CHEMICAL PHYSICS, 1993, 173 (02) :241-265
[4]   Quantitative studies of the photoabsorption and photoionization of PCl3 in the valence and inner (P 2p,2s; Cl 2p,2s) shell regions [J].
Au, JW ;
Brion, CE .
CHEMICAL PHYSICS, 1997, 218 (1-2) :87-107
[5]   AN EVALUATION OF ATOMIC AND MOLECULAR MIXTURE RULES AND GROUP ADDITIVITY CONCEPTS FOR THE ESTIMATION OF RADIATION ABSORPTION BY LONG-CHAINED, SATURATED-HYDROCARBONS AT VACUUM UV AND SOFT-X-RAY ENERGIES [J].
AU, JW ;
COOPER, G ;
BURTON, GR ;
BRION, CE .
CHEMICAL PHYSICS, 1994, 187 (03) :305-316
[6]  
AU JW, 1993, CHEM PHYS, V173, P139
[7]   DIPOLE TERM AND FIRST DERIVATIVE AT K = O OF GENERALIZED OSCILLATOR STRENGTH OF HE BY KEV ELECTRON-IMPACT [J].
BACKX, C ;
TOL, RR ;
WIGHT, GR ;
VANDERWIEL, MJ .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1975, 8 (12) :2050-2057
[8]   ELECTRON-ION COINCIDENCE MEASUREMENTS OF CH4 [J].
BACKX, C ;
VANDERWIEL, MJ .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1975, 8 (18) :3020-3033
[9]   RESONANCE FLUORESCENCE AND ABSORPTION-SPECTRUM OF NITROGEN-DIOXIDE [J].
BRAND, JCD ;
HARDWICK, JL ;
PIRKLE, RJ ;
SELISKAR, CJ .
CANADIAN JOURNAL OF PHYSICS, 1973, 51 (20) :2184-2188
[10]   DIPOLE OSCILLATOR-STRENGTHS FOR THE PHOTOABSORPTION, PHOTO-IONIZATION AND FRAGMENTATION OF MOLECULAR-OXYGEN [J].
BRION, CE ;
TAN, KH ;
VANDERWIEL, MJ ;
VANDERLEEUW, PE .
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1979, 17 (02) :101-119