Hey guys from Radiologando, how are you? I am the professor Igor and we're here for another video on the channel and today I'm going to teach you what radioactive decay is. But calm, before we begin the video for you already let your like.
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Without further ado let's go to the video? Radioactive decay, in turn, it is considered as a time, a specific period in the reduction of the activity of some radioactive sample time . But calm down, for you to understand, basically, what is all this, we need to go back a little before and understand where radioactivity comes from.
To radioactivity was discovered there around the year of a thousand eight hundred and ninety-six. A year right after there compared to X-ray discovery, where in turn you noticed the radiographic plate darkening networks due to uranium sample. Basically this activity it is basically coming from or coming from a sample to radioactive decay, also called radiohistotope.
Those radioisotopes, in turn, are the most variable possible, with different types of energies and also emissions to different radiation. The radiations which in turn can be emitted can be electromagnetic or even body muscle. Electromagnetic radiations are X-rays and , generally.
On the other hand, corporacular radiations can be alpha particles, beta particles or even emission depositons or even other types of particles. But in general, basically radioactive decay, it will be the estimated time, the average time that this radizotic will take the in relation to their loss or decrease their activity. Talking radioactive decay Cobalt also assimilate with respect to the half-life that is exactly again, gamma rays time necessary for a radioactive sample to lose or decrease in half your initial energy.
So the radioactive decay is it's actually an exponential constant which in turn goes to lowered this activity rate. And because there is a these samples radioactive? Why are they there for this radioactive decay process.
In fact but radioactive samples they are basically composed by a unstable atoms that in turn will be there releasing power with different radiations like I just explain and basically the initial objective or at least what is understood in relation to physics is that if sample it arrives there, it reaches its stability to that stops or ceases these emissions and until this is will continue to release energy. Okay professor and all samples they have reached radioactive decay they equal. No, basically every common radioactive isotope type have a different half-life there, even one emission of a different amount of energy.
The most is the Sesi one hundred and thirty-seven, the sixty and even in the techniques, today in the modalities in nuclear medicine, as they are applied there in and they can be utilized therein the eighteen fluorine and even the ninety-nine target stable. Each of these isotopes has a time different half-life. For example, the one hundred and thirty seven, the Cobalt sixty which are widely used there in relation to radiotherapy, it has approximately thirty years of half-life for cesium and approximately five years in relation to the sixty.
The eighteen used in the technique in the modality of nuclear medicine that has a time of my life of approximately two hours and the ninety-nine stable target have a life span of approximately six hours. There are several other radiosobics that take days or even billions of years to be able to have your radioactive decay there constantly, right? Basically this radioactive decay goes finalizing as I said when that this achieve its stability and this may take some time, whether it's hours, days, years or I'll even same billions of years.
But overall, we also manage to identify what type of sample it is, what type de is also due to do this radioactive decay. The equipment specific electronic to be able to assess there what type of material, what is your energy that's being emitted and even itself, its activity, is this equipment that is on your screen. This camera, in turn, goes doing all the area detection there or even a more local detection of any area that may be contained in relation to some radioactive material or some radioactive sample, and we can also evaluate a basically doing calculations based on information that is obtained.
Basically these radioactive samples or the term you will listen there basically in areas such as nuclear medicine, radiation therapy and even environmental radiation and even industrial radiology. So, remembering that the radioactive decay, in turn, it can be different from a sample, for sample and that in turn is also stuck there in half-life relationship. So what did you think about content.
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