What is the penetrating power of electron capture?
Figure 14-10 Electron Capture
| Type | Emission | Penetrating Power |
|---|---|---|
| Gamma Decay | Photons, high energy | 10000, highly penetrating but not very ionizing |
| Positron Emission | Positron | 100 |
| Electron Capture | Neutrino (from inner shell -1e0) | ~ Infinite for Neutrino |
Which has the greatest penetrating power?
Gamma rays
Gamma rays have the most penetrating powers of all three radiation sources.
Is electron capture strong or weak?
Electron capture is an example of weak interaction, one of the four fundamental forces.
Which particles have high penetrating power?
γ-rays and X-rays have higher penetrating power than α-particles or β-particles, travel several tens to hundreds of meters in the air (depending on their energy) and gradually lose their energy as they collide with atoms in the air.
What is electron capture process?
Electron capture is the radioactive decay process by which an atom’s inner orbital electron is absorbed within the nucleus followed by conversion of a proton to a neutron and emission of a neutrino (ve) 1.
Which particle has the lowest penetrating power?
alpha particles
The α-particle has the least penetrating power since it is the largest and slowest emission. It can be blocked by a sheet of paper or a human hand. Beta particles are more penetrating than alpha particles, but can be stopped by a thin sheet of aluminum.
Which rays has the least penetrating power?
Alpha particles are positively charged helium nuclei. Hence, in comparison to beta particles and gamma rays, they have considerable mass and charge and hence, they have the least penetrating power.
Is electron capture the same as beta minus decay?
Electron capture is sometimes included as a type of beta decay, because the basic nuclear process, mediated by the weak force, is the same. In electron capture, an inner atomic electron is captured by a proton in the nucleus, transforming it into a neutron, and an electron neutrino is released.
What is meant by penetrating power?
“Penetrating power” is defined as the power (length) of an electron beam transmitted for a substance. In the case of a TEM, electrons that do not pass through the objective aperture are regarded to be absorbed.
What is the difference between beta decay and electron capture?
Whereas beta decay can occur spontaneously when energetically allowed, for an electron capture the weak forces requires that the electron come into close contact with a proton of the nucleus. Below this energy threshold, electron capture becomes the only process available to reduce an excess of protons.