Antartic radioactive dating of meteorites
An ice core is a core sample that is typically removed from an ice sheet, most commonly from the polar ice caps of Antarctica, Greenland or from high mountain ...
· · Researchers have used radiometric krypton-dating to find the age of ancient Antarctic ice.
Simply counting the number of rings will give one a fairly good idea of the age of the tree.
Periods of heavy rain and lots of sunshine will make larger gaps of growth in the rings, while periods of drought might make it difficult to count individual rings. When a given quantity of an isotope is created (in a supernovae, for example), after the half-life has expired, 50% of the parent isotope will have decomposed into daughter isotopes.
Pulse repetition rates range from 100 Hz to 2500 Hz, allowing fast data acquisition.
Most of the pump lasers do not require water for cooling, thus reducing running and maintenance costs.
These ions are accelerated in an electric field through collimating slits and subject to a magnetic field which causes the ions to follow a curved path. By adjustment of the strength of the magnetic field and suitable placement of an ion collector, the different isotopes can be measured with precision.
There are some things that affect these measurements.
The output wavelength can be set from control pad with backlit display that is easy to read even while wearing laser safety glasses.
Alternatively, the laser can be controlled also from personal computer through RS232 interface using supplied Lab View drivers.
High conversion efficiency, stable output characteristics, easy maintenance and compact size make our systems excellent choice for many applications, like laser-induced fluorescence, photolysis, photobiology and etc...
The new technique could be used to hunt and date old ice New line of the tunable DPSS q-switched nanosecond Nd: YAG lasers is available from EKSPLA.
NT200 series tunable laser system integrates into a single compact housing a nanosecond Optical Parametric Oscillator (OPO) and Diode-Pumped Solid–State (DPSS) Q-switched pump laser.