Low-temperature luminescence spectroscopy using conduction cooling and a pulsed source luminescence spectrometer

The Analyst ◽  
1983 ◽  
Vol 108 (1293) ◽  
pp. 1471 ◽  
Author(s):  
Alun T. Rhys Williams ◽  
Stephen A. Winfield ◽  
James N. Miller
Keyword(s):  
Low Temperature ◽  
Luminescence Spectroscopy ◽  
Conduction Cooling

Total Luminescence Spectroscopy of Terrylene in Low-Temperature Shpol'skii Matrixes

1995 ◽  
Vol 99 (46) ◽  
pp. 16835-16841 ◽  
Author(s):  
Krystyna Palewska ◽  
Jozef Lipinski ◽  
Juliusz Sworakowski ◽  
Jerzy Sepio-l ◽  
Hansruedi Gygax ◽  
...  
Keyword(s):  
Low Temperature ◽  
Luminescence Spectroscopy ◽  
Total Luminescence Spectroscopy

scholarly journals PPMS-based set-up for Raman and luminescence spectroscopy at high magnetic field, high pressure and low temperature

2015 ◽  
Vol 2 (1) ◽  
pp. 3
Author(s):  
Matthias Hudl ◽  
Peter Lazor ◽  
Roland Mathieu ◽  
Alexander G Gavriliuk ◽  
Viktor V Struzhkin
Keyword(s):  
Magnetic Field ◽  
High Pressure ◽  
Low Temperature ◽  
High Magnetic Field ◽  
Luminescence Spectroscopy ◽  
Set Up

scholarly journals Optical Spectroscopy of Li6Y(BO3)3 Single Crystals Doped with Dysprosium

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 503
Author(s):  
Éva Tichy-Rács ◽  
Ivo Romet ◽  
László Kovács ◽  
Krisztián Lengyel ◽  
Gábor Corradi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Optical Absorption ◽  
Single Crystals ◽  
Crystal Field ◽  
Excited States ◽  
Ground State ◽  
Energy Levels ◽  
Luminescence Spectroscopy ◽  
Wide Spectral Range ◽  
Low Symmetry

The energy levels of Dy3+ ions have been determined in lithium yttrium borate (Li6Y(BO3)3) single crystals in a wide spectral range between 3000 and 40,000 cm−1 using optical absorption and luminescence spectroscopy, which also allow for an analysis of the ground state. The crystal field splittings of the 6H15/2 ground state and all excited states up to the 4F7/2 manifold were obtained at a low temperature, based on luminescence (T = 4.2–78 K) and absorption (T = 8–100 K) measurements, respectively. The numbers of experimentally observed Stark sublevels are in agreement with those expected theoretically for Dy3+ ions occupying a single low symmetry (C1) site.

Evaluation of an Effective Conduction Cooling Device for Low-Temperature Phosphorimetry

1980 ◽  
Vol 34 (1) ◽  
pp. 15-17 ◽  
Author(s):  
J. L. Ward ◽  
R. P. Bateh ◽  
J. D. Winefordner
Keyword(s):  
Low Temperature ◽  
Cooling System ◽  
Sample Introduction ◽  
Cooling Device ◽  
Cooling Systems ◽  
Figures Of Merit ◽  
Conduction Cooling ◽  
Conduction Cooling System ◽  
New System ◽  
Analytical Figures Of Merit

A conduction cooling system is presented as a possible means of improving the precision of sample introduction in low-temperature phosphorimetry. Analytical figures of merit are shown for several compounds as a means of evaluating the system and comparing it to immersion cooling systems. The results show that the two methods of cooling are comparable, but the new system does have advantages for routine analysis applications.

Temperature- and pressure-dependent luminescence spectroscopy on the trans-[ReO2(pyridine)4]+ complex — Analysis of vibronic structure, luminescence energies, and bonding characteristics

2004 ◽  
Vol 82 (6) ◽  
pp. 1083-1091 ◽  
Author(s):  
John K Grey ◽  
Ian S Butler ◽  
Christian Reber
Keyword(s):  
Molecular Structure ◽  
Low Temperature ◽  
Room Temperature ◽  
Complex Analysis ◽  
Variable Pressure ◽  
Luminescence Spectroscopy ◽  
Luminescence Spectra ◽  
Vibronic Structure ◽  
Temperature Spectra ◽  
Temperature And Pressure

Resolved vibronic structure in electronic spectra provides a detailed view into how molecular structure changes after absorption or emission of a photon. We report temperature- and pressure-dependent luminescence spectra of trans-[ReO2(pyridine)4]I. Low-temperature spectra reveal long vibronic progressions in the totally symmetric O=Re=O (907 cm–1) and Re-pyridine (211 cm–1) stretching modes, indicating large structural displacements along these normal coordinates. The luminescence band maximum is at ca. 15 500 cm–1. Room-temperature spectra are somewhat less-resolved; however, intervals closely matching the O=Re=O frequency (~870 cm–1) persist at higher temperatures. The variable pressure spectra exhibit distinct changes in the vibronic patterns, and luminescence energies decrease by 16 ± 2 cm–1/kbar (1 bar = 100 kPa). Low-temperature spectra are modeled using two-dimensional potential energy surfaces to represent the initial and final electronic states, from which the quantitative normal coordinate offsets can be determined. We then adapt this model to the room-temperature, pressure-dependent data where it is possible to determine how the offsets and other important spectroscopic parameters vary with the pressure-induced changes of the molecular structure. Key words: trans-[ReO2(pyridine)4]I, low-temperature luminescence spectroscopy, high-pressure luminescence spectroscopy, vibronic structure, emitting state distortions.

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