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In radioactive decay 81Rb is converted to 81Kr with the emission of X-ray photon What is the nature of decay?
I don't believe that this form of deay would directly form a X-ray photon. To go from 81RB to 81KR, a proton would need to be converted to a neutron - thus inverse Beta Decay. During this decay event, a neutrono would also be produced.
Because the electron captured is in the inner shell, the atom is unstable. Thus, when the electrons realign in their respective shells, a high energy photon would then be produced. However, this photon is not the direct result of decay but is instead due to the atom returning to is ground state.
See http://en.wikipedia.org/wiki/Electron_capture
What else can I help you with?
What is the Difference between spontaneous emission and stimulated emission any 5points?
Spontaneous emission occurs randomly and naturally when an excited atom transitions to a lower energy state, releasing a photon in the process. Stimulated emission, on the other hand, is induced by the presence of external photons that cause an already excited atom to release a second identical photon. In spontaneous emission, the emitted photon may have any frequency within the spectral line width of the transition. In stimulated emission, the emitted photon has the same frequency, phase, direction, and polarization as the stimulating photon. Spontaneous emission is non-coherent and occurs independently of external radiation. In contrast, stimulated emission is a coherent process that contributes to the amplification of light in lasers. The rate of spontaneous emission is independent of the intensity of external radiation, while the rate of stimulated emission is directly proportional to the intensity of the stimulating radiation. Spontaneous emission plays a role in processes like fluorescence and phosphorescence, whereas stimulated emission is the principle behind the operation of lasers.
What brain imaging method requires the injection of a radioactive substance?
Single-photon emission computed tomography (SPECT) is a brain imaging method that requires the injection of a radioactive substance. This substance emits gamma rays that can be detected by a gamma camera to produce detailed images of brain activity.
When a radioactive molecule is attached to a probe a site where the probe bound to its target can be identified because?
It's radioactive. Cameras which sense the radioactivity can then produce an image of the area. Some are very highly detailed, such as a thallium scan of the heart; some are less so, such as gallium and indium scans. For plato, the answer is A
What is the process in which an electron returns to a lower energy level and emits a photon?
This process is called "emission." When an electron transitions from a higher to a lower energy level within an atom, it releases a photon of light corresponding to the energy difference between the two levels. This emitted photon carries away the energy that the electron lost during the transition.
When an electron returns to its resting state does it give out energy in the form of a photon?
Yes, when an electron returns to its resting state it can release energy in the form of a photon. This process is known as emission of light.
What does the medical abbreviation SPECT mean?
Single Photon Emission Computed Tomography (SPECT)Single Photon Emission Computed Tomography
What radioactive emission is a particle?
Alpha emission is a 4helium nucleus, which behaves like a particle. Beta emission is an electron, which behaves like a particle. Gamma emission is a photon, which behaves like a particle. Experiments can also be set up to show their wavelike properties (for alpha, beta, and gamma radiation).
What is the difference between spontaneous emission and stimulated emission?
stimulated emission causes due to the energy difference between the higher and lower energy level state, but it doesn't depends in the case of spontaneous emission . spontaneous emission causes without any stimulation .In stimulated emission energy transfer is twice the energy transfer of spontaneous emission.
What is a SPECT scan?
Single photon emission tomography
This is a high energy photon resulting from the redistribution of the charge within the nucleus?
The high energy photon that results from the redistribution of the charge within the nucleus is called a gamma ray. It refers to a penetrating electromagnetic radiation that arises from the radioactive decay of atomic nuclei.
Principle of Spontaneous emission and stimulated emission?
Spontaneous emission is the process where an atom or molecule transitions from a higher energy state to a lower energy state, emitting a photon in the process without any external stimulation. Stimulated emission occurs when an incoming photon triggers an atom or molecule already in an excited state to emit a second photon that has the same wavelength, phase, and direction as the incoming photon, resulting in the amplification of light.
Is gamma emission a type of radioactive decay?
Yes, gamma rays are ionizing but not as strongly ionizing as other forms of radiation such as Alpha, which is the strongest due to it's size, therefore making it more likely to collide with atoms and remove electrons. Gamma is only weakly ionizing because it is a small photon.
What does a photon do in the process of light absorption and emission?
A photon is a tiny particle of light that is absorbed by an atom or molecule during the process of light absorption. This absorption causes the atom or molecule to become excited, leading to the emission of a new photon when the atom or molecule returns to its original state.
What is it called when a photon is given off?
When a photon is emitted or given off, it is called emission. This can occur when an atom or particle transitions to a lower energy state, releasing a photon in the process.
What is the Difference between spontaneous emission and stimulated emission any 5points?
Spontaneous emission occurs randomly and naturally when an excited atom transitions to a lower energy state, releasing a photon in the process. Stimulated emission, on the other hand, is induced by the presence of external photons that cause an already excited atom to release a second identical photon. In spontaneous emission, the emitted photon may have any frequency within the spectral line width of the transition. In stimulated emission, the emitted photon has the same frequency, phase, direction, and polarization as the stimulating photon. Spontaneous emission is non-coherent and occurs independently of external radiation. In contrast, stimulated emission is a coherent process that contributes to the amplification of light in lasers. The rate of spontaneous emission is independent of the intensity of external radiation, while the rate of stimulated emission is directly proportional to the intensity of the stimulating radiation. Spontaneous emission plays a role in processes like fluorescence and phosphorescence, whereas stimulated emission is the principle behind the operation of lasers.
Why does stimulated emission occur (your answer should include an explanation of probability)?
Stimulated emission occurs when an incoming photon interacts with an excited atom, causing it to emit a second photon that is identical in frequency, phase, and direction. The probability of stimulated emission is higher when the atom is already in an excited state and encounters an incoming photon with the same energy level, which promotes the emission process. This process amplifies the intensity of the light signal and is the basis of operation for lasers.
Is technetium a radiographic medium?
Yes, technetium is commonly used in radiographic imaging as a radiopharmaceutical agent. It emits gamma radiation that can be detected by imaging techniques such as Single Photon Emission Computed Tomography (SPECT).
