Discovery Laser Flash DLF 1600’s source module is a freestanding unit employing a custom Class 1 35 J Nd:Glass laser pulse source. It provides a collimated, monochromatic energy pulse to specimens heated up to the temperature of 1600°C. The laser radiation is delivered via a proprietary fiber optic delivery wand which ensures a 99% homogenized laser pulse. Leading to much more accurate measurements than any direct firing laser pulse instruments. The laser source produces a 300 µs to 400 µs pulse width.
DLF 1600 furnace employs a MoSi2 heater, a high-purity alumina muffle and a specimen holder, supporting continuous operation up to six specimens from RT to 1600°C in air or inert gas, or in vacuum to 10-3torr. Coaxially symmetrical heat zone, specimen carousel’s design, and thermocouple located at its center ensure an extremely uniform specimen temperature uniformity. The baffle structure prevents turbulence interference on the thermogram signal and assure accurate measurements especially up to 1600°C. The module includes an LN2-cooled IR detector. Simple to operate and safe to use, the system is suitable for research and development programs, as well as quality control.
DLF 1600 Features
- Nd: glass Laser pulse source
- Alumina muffle tube furnace; vacuum up to 10-3 Torr
- Room Temperature to 1600oC operation
- High Power MoSi2 Heater
- Six sample carousel that holds 12.7mm diameter specimen
- LN2-cooled InSb detector
- Data acquisition: 16 bits
- Air, purge gas, and vacuum Atmosphere
|Temperature Range||RT to 1600°C|
Pulse energy: variable up to 35 J
Pulse width: 300 µs to 400 µs
Transferline: proprietary fiber optic wand
|Furnace||MoSi2 heater; coaxially symmetrical heat zone;
Alumina muffle tube furnace
|Thermal Diffusivity Range||0.01 to 1000 mm2/s|
|Thermal Conductivity Range||0.1 to 2000W/(m·K)|
|Repeatability||Thermal Diffusivity: ±2%
Specific Heat: ±3.5%
|Accuracy||Thermal Diffusivity: ±2.3%
Specific Heat: ±4%
|Data acquisition||16 bits|
|Autosampler||6 positions carousel|
|Sample Dimension||diameter: 12.7mm
thickness: up to 6mm
|Atmosphere||air, inert, vacuum (10-3torr)|
- TA Proprietary Fiber Optic Wand
- 6 Sample Carousel
- Modular Structure
- Laser System
- Real-Time Pulse Mapping
TA Proprietary Fiber Optic Wand
Highly homogenous beam (99 %) that allows for increased measurement accuracy. A modular design that facilitates easy and fast switching from furnace-to-furnace and the ability to retained optical alignment.
6 Sample Carousel
Designed for high throughput and accurate specific heat measurement. Samples and reference can be loaded in the same test to achieve the optimized specific heat measurement
Separation of the laser system from the furnace eliminates the effect of electromagnetic nose or spikes of high power on the laser detecting system. This allows for easy maintenance and long term alignment retention
- Robust Nd: glass laser that requires a maximum of 35 Joules for high temperature measurements on thick, shiny or low conductive samples. Robust cooling and low power requirements will result in a reliable and extended life of the laser.
- Downward firing laser scheme that allows for visibility of total alignment when the carousel is retracted and for simplified long term maintenance.
Real-Time Pulse Mapping
Results in: Higher accuracy, definition of t0 , exact pulse width correction for each shot, and true monitoring of adjacent shots for CP testing
DLF 1600 Software
- TA DLF1600 software employed all main advanced algorithms for data analysis of thermogram, such as Clark and Taylor, Cowan, Degiovanni, Koski, Least Squares, Logarithmic, Moment, Heckman, Azumi, etc.
- TA pioneered the technique of goodness of fit for the optimal choice of the algorithms.
- The theoretical models used are two-dimensional with heat loss from all surfaces of the sample.
- Compare experimental and theoretical data by the formula of the goodness of fit.