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Introducing the fourth generation 5000F
It is hardly surprising that spark sources are used more than any other pulses source for fluorescence lifetime studies. They have appropriate pulse duration, are easy to use, offer a wide spectral range and give good value for money. The coaxial nanosecond flashlamp was invented by founder members of IBH in 1981 (reference 1) and the HORIBA Jobin Yvon IBH 5000F is the fourth generation version. This workhorse is an ideal excitation source for fluorescence lifetimes between 100ps and 100µs, particularly at wavelengths shorter than 370nm. Unlike older flashlamp designs, the 5000F is easy to use and does not require extensive routine maintenance.
The Mark 4 5000F has the following features:
- Unique coaxial construction for the most efficient operation and fastest optical pulses
- Completely redesigned electronics eliminate RF emission
- Minimal routine maintenance required - 10 minutes per week
- Thyratron gated spark
- f/1 collection optics with iris diaphragm
- Variable separation electrodes
- Gas fill port and pressure sensor
- Fibre-optic port (fast risetime detector and constant fraction discriminator inside control electronics)
- Spectral range 180 to 780nm
- The HORIBA Jobin Yvon IBH 5000F includes special electrodes for use in the NIR (reference 2)
- Gold plated inside and out for best ever RF suppression and pulse stability
The 5000f control electronics are housed in a high quality emc-compliant rack mountable enclosure containing the following functional blocks:
- Regulated 0 to 10kV spark voltage supply
- Variable 10Hz to 100kHz thyratron trigger pulse generator
- Timing synchronisation detector (risetime <1ns) with regulated power supply and integrated constant fraction discriminator
- Spark stability monitor for "free-run" and "misfire" indication
- Digital performance monitoring and display of spark chamber pressure, spark voltage and spark current.
NIM and TTL-compatible synchronization outputs are provided for triggering external devices. An optocoupled trigger input is provided to allow external devices to trigger the 5000F (slave mode operation). The synchronization outputs remain available in slave mode. Two auxiliary ±15V DC outputs are provided for powering external devices, such as amplifiers and detectors.
Note that unlike older flashlamp designs, the HORIBA Jobin Yvon IBH Mark 4 5000F does not require an additional external synchronization detector and discriminator.
- Fluorescence lifetimes
- Time-resolved spectra
- Optical fibre sensors
- Semiconductor luminescence
- Protein Research
- Excimer kinetics
- Anisotropy decay times
- Photochemistry
- Detector testing
- Energy transfer kinetics
- Membrane studies
- Vacuum UV spectroscopy
- "Coaxial
nanosecond flashlamp", D J S Birch and R E Imhof,
Rev.Sci.Instrum., 52, 1206-1212, (1981).
- "Near infra-red Spark Source Excitation for Fluorescence Lifetime Measurements", D J S Birch, G Hungerford and R E Imhof, Rev.Sci.Instrum.,62, 2405-2408, (1991).
