Poster Session

Poster Session I (4pm-6pm CDT)

4:00 pm – 6:00 pm, Tuesday June 4 // Session D00

Topics:

Observation and Identification of Spectral Lines of Se-like to Fe-like Praseodymium Ions

Poster 1

Presenter: Elizabeth Brown (Clemson University)

Authors: Brynna Neff (Clemson University), Hunter Staiger (Clemson University), Samuel Sanders (Clemson University), Yang Yang (Clemson University), Aung Naing (University of Delaware), Joseph Tan (National Institute of Standards & Technology), Joan Marler (Clemson University), Yuri Ralchenko (National Institute of Standards and Technology), Endre Takacs (Clemson University)

The spectral analysis of highly charged ions, such as highly ionized lanthanides, presents a unique opportunity to study quantum electrodynamic effects enhanced strongly by the large nuclear charges and can have significant applications in astrophysical studies. The NIST electron beam ion trap [1] was used to generate and contain charge states of Br-like Pr through Co-like Pr. Emissions in the extreme-ultraviolet (EUV) were observed using a flat-field grazing incidence spectrometer [2], and transitions were identified from the Pr ions. Electron beam energies were varied from 0.9 keV to 2.2 keV to generate the charge states of interest. The spectrometer was calibrated using well-known lines from Ne, Xe, Ar, and Ba across the wavelength range of 7.2 nm to 25.7 nm. Line identifications were made by comparing experimental and theoretical spectra generated by collisional-radiative modeling of the non-Maxwellian plasma.

[1] J. D. Gillaspy, Phys. Scr. T 71, 99 (1997).

[2] Blagojević et al., Rev. Sci. Instrum. 76, 083102 (2005).

Funding acknowledgement

This work was funded by a NIST Grant Award Number 70NANB20H87 and by a NSF Award Number 2309273.

POSTERS (157)