1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Structure and predissociation of the Rydberg state of : First extreme-ultraviolet and new near-infrared observations, with coupled-channels analysis
Rent:
Rent this article for
USD
10.1063/1.3023034
/content/aip/journal/jcp/129/20/10.1063/1.3023034
http://aip.metastore.ingenta.com/content/aip/journal/jcp/129/20/10.1063/1.3023034

Figures

Image of FIG. 1.
FIG. 1.

ionization spectrum of the band in , recorded using the PDL-based XUV source. The rising signal level at the extreme left of the spectrum is from the band head of the much stronger transition. The lines marked with an asterisk are high-rotational lines from the band.

Image of FIG. 2.
FIG. 2.

ionization spectrum of the band in , recorded using the PDA-based XUV source, emphasizing the fine-structure splitting of the level. Left: Recording of and . Right: Recording of and .

Image of FIG. 3.
FIG. 3.

ionization spectrum of the branches of the and bands in , recorded using the PDA-based XUV source. Nozzle-skimmer , except for the scan labeled with an asterisk where the nozzle-skimmer .

Image of FIG. 4.
FIG. 4.

Experimental reduced term values for - and -parity levels in the region of the crossing in (symbols). Terms have been reduced so that the -parity levels lie on the zero line. The two level series, which are located above and below the level series, do not cross in the region covered by the figure. The fitted reduced terms resulting from the deperturbation procedure (see text) are also shown (solid lines: levels and dashed lines: levels).

Image of FIG. 5.
FIG. 5.

NIR spectrum in the region of the broadened lines from the band of . Fitted positions for the , , and lines are indicated. Simultaneously fitted predissociation linewidths are FWHM for each component. The overlapping narrow lines are from unidentified transitions.

Image of FIG. 6.
FIG. 6.

NIR spectrum in the region of the line from the band of (filled circles), compared with Voigt-profile fit (white curve). Fitted positions for the -form lines arising from are indicated, assuming an strength ratio of 5:3:1, and a common predissociation width. The overlapping, significantly narrower features marked with asterisks are from unidentified transitions.

Image of FIG. 7.
FIG. 7.

NIR spectrum of the band of , indicating very strong rotational broadening. The overlapping very narrow features are from unidentified neutral and ionic transitions.

Image of FIG. 8.
FIG. 8.

Model diabatic potential-energy curve for the state of , relative to the level of the state. Observed energies for the levels of are also shown.

Image of FIG. 9.
FIG. 9.

Model diabatic potential-energy curves for the Rydberg-valence manifold of , taken from Ref. 18.

Image of FIG. 10.
FIG. 10.

Vibrational and rotational dependence of predissociation level widths for the Rydberg state of . Full circles: Present fine-structure-averaged experimental widths. Open circles: widths of Ref. 6. Curves: Present CSE-model results (Solid: , dashed: , and dotted: ). The turning over of the model widths in the region of is caused by the crossing of in this region by the higher-lying valence level which has a lower rotational constant.

Image of FIG. 11.
FIG. 11.

Rotational dependence of predissociation width for the level of . Solid curve: Computed CSE-model widths for the sublevel. Solid circles: Experimental linewidths from NIR spectrum for lines from band (see text).

Tables

Generic image for table
Table I.

Observed transition energies for the band in and corresponding term values, all in . Entries given to three decimal places are from PDA spectra, those to two decimal places from PDL spectra. Entries marked with an asterisk are derived from blended lines.

Generic image for table
Table II.

Fitted spectroscopic parameters for the levels of , all in . fitting uncertainties are given in parentheses, in units of the last significant figure. The , and , parameters are derived from the present XUV spectra, the remainder from the present NIR spectra.

Generic image for table
Table III.

Observed transition energies for the band in , together with corresponding term values, all in . Entries given to three decimal places are from PDA spectra, those to two decimal places from PDL spectra. Entries marked with an s are derived from shoulders in the spectrum.

Generic image for table
Table IV.

Observed transition energies, in , and upper-state predissociation level widths, in FWHM, for the band of , from NIR spectrum. Separate energies could not be determined for the and lines marked with an asterisk. Fitted level widths assume a common value for the and components, while the assume a common width for all components.

Generic image for table
Table V.

Observed transition energies, in , and upper-state predissociation level widths, in FWHM, for the band of , from NIR spectrum. Separate energies could not be determined for the and lines marked with an asterisk. Fitted level widths assume a common width for all fine-structure components.

Generic image for table
Table VI.

Observed transition energies, in , and upper-state predissociation level widths, in FWHM, for the band of , from NIR spectrum. Separate energies could not be determined for the lines marked with an asterisk. Fitted level widths assume a common width for all fine-structure components.

Generic image for table
Table VII.

Energies for vibrational levels of the and Rydberg states of , in . Corresponding vibrational differences are compared with those for the ground state of .

Generic image for table
Table VIII.

Comparison of experimental, diabatic, and coupled-channel spectroscopic parameters for levels of the state of , all in .

Generic image for table
Table IX.

Polynomial coefficients for the generation of CSE-model predissociation widths for the levels of . FWHM; .

Loading

Article metrics loading...

/content/aip/journal/jcp/129/20/10.1063/1.3023034
2008-11-24
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Structure and predissociation of the 3pσuD Σ3u+ Rydberg state of N2: First extreme-ultraviolet and new near-infrared observations, with coupled-channels analysis
http://aip.metastore.ingenta.com/content/aip/journal/jcp/129/20/10.1063/1.3023034
10.1063/1.3023034
SEARCH_EXPAND_ITEM