RT info:eu-repo/semantics/article
T1 Characterisation of a high-resolution spectroscopic setup for experimental determination of transition probabilities of neodymium
A1 Sen Sarma, Pratyush Ranjan
A1 Belmonte Sainz Ezquerra, María Teresa
A1 Llorente, Sara
A1 Mar Sardaña, Santiago
K1 Atomic emission spectroscopy
K1 Plasma diagnostics
K1 Rare earth elements
K1 Transition probabilities
K1 Hollow-cathode discharge
K1 Diffraction grating
K1 Spectral resolution
K1 22 Física
AB Accurate atomic data for lanthanides, particularly neodymium (Nd), are essential for astrophysical applications, including modelling kilonova opacity and determining stellar abundances. However, reliable experimental data for these ions remain scarce due to the spectral complexity of the lanthanides. In this study, we present a comprehensive characterisation of a high-resolution spectroscopic setup optimised for measuring transition probabilities of Nd lines. The system consists of a 1.5 m Czerny-Turner spectrometer coupled to a high-sensitivity CMOS detector, achieving a resolving power of up to 150,000. A modified hollow cathode lamp, originally developed at Imperial College London, was used to generate a stable neodymium plasma using argon as a carrier gas. We include an in-depth characterisation of our high-resolution setup, including spectral calibration, resolution assessment, instrument response function, and CMOS noise analysis. The validity of the partial local thermodynamic equilibrium (pLTE) assumption in the hollow cathode lamp was tested by measuring transition probabilities for 15 Nd II lines in the spectral range 378–521 nm. The derived transition probabilities show agreement within 30% of the reference values. This validation paves the way for accurate measurements of currently unreported Nd III transition probabilities, providing critical data for future astrophysical modelling efforts.
PB Elsevier
SN 0584-8547
YR 2026
FD 2026
LK https://uvadoc.uva.es/handle/10324/80073
UL https://uvadoc.uva.es/handle/10324/80073
LA eng
NO Spectrochimica Acta Part B: Atomic Spectroscopy, 2025, vol. 235, p. 107342
NO Producción Científica
DS UVaDOC
RD 25-nov-2025