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What is a device that uses a superheated liquid to detect radioactive particles?
A liquid scintillation counter is a device that uses a superheated liquid to detect radioactive particles. These particles interact with the liquid, producing light flashes that can be measured to determine the level of radioactivity.
Where can radiocarbon dating be done?
Radiocarbon dating can be done at a variety of research institutions including Woods Whole and UC Irvine. Radiocarbon dating is done in labs with equipment specific to carbon 14 analysis. Most radiocarbon dating labs have liquid scintillation counters for radiometric dating and accelerator mass spectrometers for AMS dating.
What is liquid hold up?
Liquid hold up refers to the proportion of a two-phase flow that is occupied by liquid. It is usually represented as a fraction of the cross-sectional area in a pipe or vessel that is filled with liquid. Liquid hold up is an important parameter in the design and operation of multiphase flow systems, as it affects the performance and efficiency of the system.
Why test for pH?
You test for pH so you know whether a liquid is an acid or base. Depending on the answer, the liquid has a different response to what you mix in with it. In the body, pH balance is important as well.
What causes water on Earth's surface to evaporate?
Any liquid tend to be evaporated; temperature and pressure have an important role.
What has the author Phillip L Howard written?
Phillip L. Howard has written: 'Basic liquid scintillation counting' -- subject(s): Laboratory Diagnosis, Liquid scintillator counting
What has the author Brian W Fox written?
Brian W. Fox has written: 'Christie's' -- subject(s): Cancer, Christie Hospital, History, Holt Radium Institute, Hospitals 'Techniques of sample preparation of liquid scintillation counting' -- subject(s): Isoelectric focusing, Liquid scintillation counting
What is beta counter?
In the beta-counter or liquid scintillation counter, the sample is dissolved in an organic scintillation solution. Due to the resulting 100% counting geometry and the absence of any detector window, this means that the counter has excellent properties in detecting radionuclides of low activity emitting low energy beta-particles, such as H3 and C14. The light photons from the sample are collected by two photomultipliers in coincidence. This arrangement will reduce the background due to thermal noise and only true scintillation events will be analysed and counted. The main problem in liquid scintillation counting is the varying counting efficiency due to quenching of scintillation events. This process is caused by chemical contamination of the sample and/or a coloured sample. This means that the counting efficiency has to be determined for every sample. Therefore a quality control of the instrument must include a control of the correction methods. Otherwise the QC methods will be the same as for any scintillation counter. The sources needed for QC of a liquid scintillation counter include calibrated sources of H3 and C14 with different counting efficiencies as well as a background sample.
The process involved in radiocarbon dating?
There are 3 principal radiocarbon dating techniques - gas proportional counting, liquid scintillation counting, and accelerator mass spectrometry (AMS). Gas proportional counting counts the beta particles emitted by a given sample - a product of radiocarbon decay. Liquid scintillation counting depends on the interaction between the scintillator and the beta particles. AMS dating counts the number of carbon atoms in a sample relative to the carbon 12 and carbon 13 present. Details found here: http://www.radiocarbon.eu/about-carbon-dating.htm
The diffiention and composition of liquid scintillation detector?
A liquid scintillation detector is a device used to detect and measure ionizing radiation by using a liquid scintillator, which emits light when radiation interacts with it. The composition typically includes a solvent, such as toluene or xylene, mixed with scintillating solutes like phenyl xylene or PPO (2,5-diphenyloxazole). When radiation passes through the liquid, it excites the scintillating molecules, causing them to emit photons, which are then detected by photomultiplier tubes. This technology is commonly used in applications like radioisotope counting and environmental monitoring.
What has the author F J Sandalls written?
F. J. Sandalls has written: 'The determination of sulphur-35 in urine by liquid scintillation counting' -- subject(s): Analysis, Diagnostic use, Isotopes, Radioisotope scanning, Sulfur isotopes, Sulphur, Urine 'Removal of radiocaesium from urban surfaces contaminated as the result of a nuclear accident'
What is the difference between counting and measuring?
Measurement is simple but measuring width , length and liquid while counting is simple but counting numbers
How would you measure americium?
Data from a MSDS:• A survey meter equipped with a G-M pancake or thin-window probe (with window thickness < 0.2 mg/cm2) is effective for detecting Am-241. Detection efficiency is between 5% (end window) and 25% (upper range pancake probe).• A survey meter equipped with a alpha scintillation probe is suitable for detection of the Am-241. Typical efficiency is 25%-35%.• Either a gamma counter or a liquid scintillation counter may be used to detect removable Am-241 contamination on wipe tests smears. The efficiency for a liquid scintillation counter can be 100% for detection of alphas.
What is a device that uses a superheated liquid to detect radioactive particles?
A liquid scintillation counter is a device that uses a superheated liquid to detect radioactive particles. These particles interact with the liquid, producing light flashes that can be measured to determine the level of radioactivity.
How can solid and liquid and gas be helpful to people?
Everything around you is either a solid, liquid, or gas. (Or plasma, counting the 4th state of matter)
What is safe working distance when performing Hot Work relevant to a liquid oxygen unloading operation?
The safe working distance for performing Hot Work near a liquid oxygen unloading operation is typically specified by the site's safety guidelines and industry best practices. It is important to maintain a sufficient distance to prevent potential ignition of the liquid oxygen due to sparks or heat generated during Hot Work. This distance should be established based on a risk assessment that considers factors such as the type of Hot Work being performed, the quantity of liquid oxygen present, and the specific hazards associated with the operation.
Most important liquid to plants?
water
