Study on the photo-transfer thermoluminescence in Eu doped potassium chloride

2013 ◽  
Vol 1526 ◽  
Author(s):  
Hector Duran-Munoz ◽  
Raul Perez-Salas ◽  
Thomas Piters
Keyword(s):  
Potassium Chloride ◽  
Transfer Process ◽  
Monochromatic Light ◽  
Glow Peak ◽  
Light Irradiation ◽  
Optical Stimulation ◽  
Transfer Processes

ABSTRACTIn this work a survey of possible optical stimulation processes in irradiated KCl:Eu with a focusing on photo-transfer thermoluminescence (PTTL) effects are shown. For different wavelengths in the range from 180 to 800 nm a cycle of measurements was performed, each comprising of a TL measurement after light irradiation, a TL measurement after beta irradiation for reference purposes and a PTTL measurement. The latter was obtained by applying first a beta irradiation, then a partial readout up to a certain end temperature followed by a monochromatic light irradiation of a specific wavelength and finally a TL measurement. This procedure was repeated for different partial readout end temperatures. From the results the existence of at least four different photo-transfer processes, induced by 310, 245 and 550 nm light are deduced. The photo transfer process induced by an approximate value of 245 nm produced a TL glow peak not seen before in beta or light induced TL. Furthermore it was observed that some of the TL peaks created by light of 240 and 260 nm were strongly sensitized after a beta irradiation and a partial readout.

scholarly journals Taming tosyl azide: the development of a scalable continuous diazo transfer process

2016 ◽  
Vol 14 (13) ◽  
pp. 3423-3431 ◽  
Author(s):  
Benjamin J. Deadman ◽  
Rosella M. O'Mahony ◽  
Denis Lynch ◽  
Daniel C. Crowley ◽  
Stuart G. Collins ◽  
...  
Keyword(s):  
Transfer Process ◽  
Scale Up ◽  
Transfer Processes

In situ generation and use of tosyl azide in flow enables enhanced safety and ready scale-up in diazo transfer processes.

Photoisomerization behavior and photoinduced surface relief gratings on azopolymer film by a monochromatic light irradiation

2006 ◽  
Vol 29 (4) ◽  
pp. 365-370 ◽  
Author(s):  
Md. Zahangir Alam ◽  
Tomoko Ohmachi ◽  
Tomonari Ogata ◽  
Takamasa Nonaka ◽  
Seiji Kurihara
Keyword(s):  
Surface Relief ◽  
Monochromatic Light ◽  
Light Irradiation ◽  
Surface Relief Gratings

scholarly journals Self-Similar Heat Transfer Processes in a Radiation-Transparent Solid Body Containing an Absorptive Inclusion with the System Featuring Phase Transitions

2019 ◽  
pp. 60-70
Author(s):  
A.V. Attetkov ◽  
I.K. Volkov ◽  
K.A. Gaydaenko
Keyword(s):  
Heat Transfer ◽  
Phase Transitions ◽  
Solid Body ◽  
Transfer Process ◽  
Sufficient Conditions ◽  
Heat Transfer Process ◽  
Similar Process ◽  
Transfer Processes ◽  
Self Similar ◽  
Phase Transition Boundary

The paper considers the problem of determining temperature field parameters in a radiation-trans-parent isotropic solid body containing an absorptive inclusion, when the system features phase transitions. We identify sufficient conditions, meeting which ensures the possibility of self-similar heat transfer process taking place in the system under con-sideration. We qualitatively investigated physical properties of the self-similar process under study and determined its specifics. We provide a theoretical validation of implementing a thermostating mode of the moving phase transition boundary in the heat transfer process investigated

Electron Transfer and Transmission at Molecule–Metal and Molecule–Semiconductor Interfaces

2006 ◽  
Author(s):  
Abraham Nitzan
Keyword(s):  
Electron Transfer ◽  
Molecular Electronics ◽  
Transfer Process ◽  
Metal Electrode ◽  
Molecular Systems ◽  
Transfer Processes ◽  
Charge Distributions ◽  
Fundamental Process ◽  
Solid Conductors ◽  
Electron Transfer Processes

This chapter continues our discussion of electron transfer processes, now focusing on the interface between molecular systems and solid conductors. Interest in such processes has recently surged within the emerging field of molecular electronics, itself part of a general multidisciplinary effort on nanotechnology. Notwithstanding new concepts, new experimental and theoretical methods, and new terminology, the start of this interest dates back to the early days of electrochemistry, marked by the famous experiments of Galvani and Volta in the late eighteenth century. The first part of this chapter discusses electron transfer in what might now be called “traditional” electrochemistry where the fundamental process is electron transfer between a molecule or a molecular ion and a metal electrode. The second part constitutes an introduction to molecular electronics, focusing on the problem of molecular conduction, which is essentially electron transfer (in this context better termed electron transmission) between two metal electrodes through a molecular layer or sometimes even a single molecule. In Chapter 16 we have focused on electron transfer processes of the following characteristics: (1) Two electronic states, one associated with the donor species, the other with the acceptor, are involved. (2) Energetics is determined by the electronic energies of the donor and acceptor states and by the electrostatic solvation of the initial and final charge distributions in their electronic and nuclear environments. (3) The energy barrier to the transfer process originates from the fact that electronic and nuclear motions occur on vastly different timescales. (4) Irreversibility is driven by nuclear relaxation about the initial and final electronic charge distributions. How will this change if one of the two electronic species is replaced by a metal? We can imagine an electron transfer process between a metal substrate and a molecule adsorbed on its surface, however the most common process of this kind takes place at the interface between a metal electrode and an electrolyte solution, where the molecular species is an ion residing in the electrolyte, near the metal surface. Electron transfer in this configuration is the fundamental process of electrochemistry.

Adjustable color response during plasmon resonance by monochromatic light irradiation

2021 ◽  
Author(s):  
Xin Li ◽  
Shencheng Fu ◽  
Jingying Miao ◽  
Mingyue Zhang ◽  
Xintong Zhang
Keyword(s):  
Plasmon Resonance ◽  
Monochromatic Light ◽  
Light Irradiation ◽  
Color Response

Boiling-Curve Measurements From a Controlled Heat-Transfer Process

1971 ◽  
Vol 93 (4) ◽  
pp. 408-412 ◽  
Author(s):  
W. C. Peterson ◽  
M. G. Zaalouk
Keyword(s):  
Heat Transfer ◽  
Transfer Process ◽  
Boiling Heat Transfer ◽  
Saturation Temperature ◽  
Heat Transfer Process ◽  
Stable Operation ◽  
Heater Surface ◽  
Transfer Processes ◽  
New Information ◽  
A New Technique

Feedback has been introduced around a boiling heat-transfer process in such a way that stable operation of the process has been obtained in all boiling regions including the transition region, in which, as is well known, the process itself is unstable. This system makes it possible to obtain much new information concerning both the steady-state and dynamic characteristics of boiling heat-transfer processes. Pool-boiling data which were obtained by the use of this system are presented. Accurate measurements of heater voltage and current were obtained by a new technique involving the use of digital instruments. These data are presented in the form of plotted experimental points in the nucleate, transition, and film boiling regions. The new measurement technique is described. Values of n in the equation q/As = CTdn are determined for all three boiling regions, where q = Btu/hr, As is heater surface area, and Td is temperature difference between heater surface and ambient liquid. The ambient liquid is distilled water maintained at saturation temperature under atmospheric pressure.

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