A high-resolution N 1s photoionization study of the N-2 molecule in the near-threshold region

被引：120

作者：

Kempgens, B ^{[1
]}

Kivimaki, A ^{[1
]}

Neeb, M ^{[1
]}

Koppe, HM ^{[1
]}

Bradshaw, AM ^{[1
]}

Feldhaus, J ^{[1
]}

机构：

[1] DESY,HAMBURGER SYNCHROTRONSTRAHLUNGSLAB HASYLAB,D-22603 HAMBURG,GERMANY

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1996年 / 29卷 / 22期

关键词：

D O I：

10.1088/0953-4075/29/22/016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The angle-resolved N 1s photoelectron spectrum of N-2 has been measured with high resolution in the threshold region. An analysis of the vibrational fine structure yields a vibrational energy of 314(+/-4) meV and a lifetime broadening of 103(+/-10) meV for the core-ionized N-2 molecule. As in the case of C 1s ionization of CO, the vibrational fine structure changes considerably with photon energy in the region of both the sigma* shape resonance and the double excitations. Both the vibrationally resolved partial photoionization cross sections and asymmetry parameters have been determined in this photon energy range. The calculated cross sections in the literature are in reasonable agreement with experiment. In addition, we have measured the cross sections and asymmetry parameters of the most intense direct and conjugate shake-up satellites. The behaviour of the pi-pi(+) satellites is found to differ significantly from that of the corresponding C 1s satellites of CO.

引用

页码：5389 / 5402

页数：14

共 33 条

[21] Excitation energy dynamics observed in N-2 Auger spectra near the K-shell threshold [J].

Neeb, M ;

Kivimaki, A ;

Kempgens, B ;

Koppe, HM ;

Bradshaw, AM .

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1996, 79 (79) :445-448

[22] CONJUGATE SHAKE-UP-ENHANCED AUGER TRANSITIONS IN N-2 [J].

NEEB, M ;

KIVIMAKI, A ;

KEMPGENS, B ;

KOPPE, HM ;

BRADSHAW, AM ;

FELDHAUS, J .

PHYSICAL REVIEW A, 1995, 52 (02) :1224-1228

[23] APPROXIMATE FORMULAS FOR FRANCK-CONDON FACTORS [J].

NICHOLLS, RW .

JOURNAL OF CHEMICAL PHYSICS, 1981, 74 (12) :6980-6981

[24] PHOTON ENERGY-DEPENDENCE OF THE HIGH RESOLUTION-C 1S PHOTOELECTRON-SPECTRUM OF CO IN THE THRESHOLD REGION [J].

RANDALL, KJ ;

KILCOYNE, ALD ;

KOPPE, HM ;

FELDHAUS, J ;

BRADSHAW, AM ;

RUBENSSON, JE ;

EBERHARDT, W ;

XU, Z ;

JOHNSON, PD ;

MA, Y .

PHYSICAL REVIEW LETTERS, 1993, 71 (08) :1156-1159

[25]

RANDALL KJ, 1992, REV SCI INSTRUM, V63, P1637

[26] NEAR-THRESHOLD BEHAVIOR OF THE K-SHELL SATELLITES IN CO [J].

REICH, T ;

HEIMANN, PA ;

PETERSEN, BL ;

HUDSON, E ;

HUSSAIN, Z ;

SHIRLEY, DA .

PHYSICAL REVIEW A, 1994, 49 (06) :4570-4577

[27] K-SHELL PHOTOIONIZATION IN MOLECULAR NITROGEN [J].

RESCIGNO, TN ;

LANGHOFF, PW .

CHEMICAL PHYSICS LETTERS, 1977, 51 (01) :65-70

[28] CORRELATION EFFECTS AND 1S HOLE SATELLITE SPECTRUM OF N2 [J].

RODWELL, WR ;

GUEST, MF ;

DARKO, T ;

HILLIER, IH ;

KENDRICK, J .

CHEMICAL PHYSICS, 1977, 22 (03) :467-473

[29] SATELLITE INTENSITIES IN THE K-SHELL PHOTOIONIZATION OF CO [J].

SCHIRMER, J ;

BRAUNSTEIN, M ;

MCKOY, V .

PHYSICAL REVIEW A, 1991, 44 (09) :5762-5772

[30] MOLECULAR K-SHELL PHOTOIONIZATION CROSS-SECTIONS IN THE RELAXED-CORE HARTREE-FOCK APPROXIMATION [J].

SCHIRMER, J ;

BRAUNSTEIN, M ;

MCKOY, V .

PHYSICAL REVIEW A, 1990, 41 (01) :283-300

← 1 2 3 4 →