Find the radiation dose in Gy for: 50 mSv of skin exposure by an emitter.

Q: What is radiation dose unit? What is the value of 1 rad?

A: The units used to measure radiation dose include rad, Gray, rem or roentgen, Sievert. Equivalent…

Q: If the radiation dosage is 31 mrem, find the energy absorbed by a 65-kg patient, assuming…

A: Dosage = 31 mrem 1 Rem = 0.01 J/kg Thus radiation dosage is = 31× 0.01 ×10-3 J/kg…

Q: A point source of radioactive material produces a dose rate of 100 Gy/hr at 1 meter from the source.…

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Q: How many Gy of exposure is needed to give a canceroustumor a dose of 40 Sv if it is exposed to α…

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Q: The tissues of mass m 100 mg have adsorbed N= 1020 alfa-particles each of them having energy E = 3…

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Q: Calculate the Equivalent Dose of 0.55 Gy resulting from an exposure to a 6 MV photon source. (WR=1

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Q: A particular radioactive source produces 144 mrad of 1-MeV gamma rays per hour at a distance of 1.0…

A: Given data: The dose in rad is, Dr= 144 mrad= 0.144 rad in one hour In t hours dose is, D= 1 rem…

Q: A 65 kg person undergoing a series of X-rays receives a dose of 12 rem. (a) What dose does he…

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Q: 4. The tissues of mass m = 100 mg have adsorbed N = 1020 alfa-particles each of them having energy E…

A: Lets calculate the total radiation absorbed by the tissue:- N=1020 Eo= 3 Mev = 3×1.6×10^-13 =…

Q: A typical chest x-ray radiation dose is 250 mSv, delivered by x rays with an RBE factor of 0.85.…

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Q: The tissues of mass m = 100 mg have adsorbed N = 1020 alfa-particles each of them having energy E =…

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Q: How many halE lives would hae to elapse for a Sample of a radioachtve isotope to decraase Of 3cpm?…

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Q: A medical researcher is using a chromium-51 source to study red blood cells. The…

A: Given:- The The gamma emission  at a distance of d1 =  1.0 m The  intensity is I1 = 0.75 mrem/s· m 2…

Q: A 54 kg laboratory worker is exposed to 27 mJ of neutron radiation with an RBE of 10. What is the…

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Q: A radiation worker received a gonad dose 25 mGy over the year. If 100% of dose was from x-ray  what…

A: H=WD where, H is the equivalent dose in sieverts (Sv). D is the absorbed dose in grays (Gy). W is…

Q: A radioactive contaminant gives an unfortunate 0.5 kg lab rat a dose of 1500 rem in just 1 minute.…

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Q: The manufacturer of a smoke alarm decides that the smallestcurrent of α radiation he can detect is…

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Q: A 50 kg nuclear plant worker is exposed to 20 mJ of neutron radiation with an RBE of 10. What is the…

A: The expression to solve for the dose of the neutron radiation is as follows:…

Q: A radiation worker stands 35 cm away from a radioactive source of 30 mCi (11.1 GBq) 9mTc (k, for…

A: The exposure rate is given by

Q: What is the dose in mSv for: (a) a 0.1 Gy x-ray?(b) 2.5 mGy of neutron exposure to the eye? (c) 1.5…

A: The dose in Sv is given by, a) The energy radiation for X-ray is 1RBE. Thus,

Q: A nuclear chemist receives an accidental radiation dose of 5.0 Gy from slow neutrons 1RBE = 4.02.…

A: To find: To find the dose in terms of rad, rem, and J/kg using the given units.

Q: The neutron generation time tgen in a particularreactor is 1.0 ms. If the reactor is operating at a…

A: The equation for the number if neutrons present can be obtained from the equation for energy…

Q: If everyone in Australia received an extra 0.05 mSv peryear of radiation, what would be the increase…

A: The increase in the number of cancer deaths per year is given by the expression,

Q: Q_ A person's hand receives a radiation dose at a rate of 50mSvh-1 at a distance of 1cm from a…

A: Radiation is the only type of heat transfer that does not need a medium to propagate. In essence,…

Q: What is the dose in Sv in a cancer treatment that exposesthe patient to 200 Gy of γ rays?

A: The expression for the required dose in SV is,

Q: A plumber at a nuclear power plant receives a whole-bodydose of 30 mSv in 15 minutes while repairing…

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Q: III. In a neutron plus gamma-ray radiation field, a TE ionization chamber registers a dose-rate of 5…

A: In this question we are given that in a neutron plus gamma-ray radiation field, a TE ionization…

Q: An 85 kg person was exposed to a gamma source and received a whole body dose of 0.5 Sv. How much…

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Q: RADIATION DOSIMETRY O THEORY RADIATION DOSES non-SI units Dose Formula SI (relationship between…

A: Given information: Here, D is exposed radiation factor and W is the weighting factor (subscripts…

Q: A particular radioactive source produces 100 mrad of 2-MeV gamma rays per hour at a distance of 1.0…

A: The duration for which the person can stand before accumulating an intolerable doss is

Q: Find the radiation dose in Gy for: (a) A 10-mSv fluoroscopic x-ray series. (b) 50 mSv of skin…

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Q: Technetium-99m is very useful in diagnostic imaging since it has a short effective half-life of 4.8…

A: 1 Ci = 3.7 × 1010 decay/s Initial activity = 41.6 mCi Half life T1/2  = 4.8 hrs Total time t = 72…

Q: 53.0 kgkg laboratory worker is exposed to 26.0 mJmJ of beta radiation with RBE = 1.5. What is the…

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Q: A plumber at a nuclear power plant receives a wholebody dose of 30 mSv in 15 minutes while repairing…

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Q: A 75 kg patient swallows a 30 mCi beta emitter with a halflife of 5.0 days, and the radioactive…

A: The number of radioactive nuclei did the patient swallowed be calculated as,…

Q: An organic sample of mass 4.00 kg absorbs 2.00 mJ via slow neutron radiation (RBE=5).What is the…

A: The expression for the dose equivalent is,

Q: What is the gamma flux (photons s¯' m²²) of a 5 µCi source of Cs-137 at a distance of 2 m?

A: Given :   Distance, r = 2 m   Source, S0 = 5μCi = 5*10-6 Ci

Q: A 75 kg person receives a whole-body radiation dose of 2.4 * 10-4 Gy, delivered by alpha particles…

A: Given information: Here, rd is the radiation dose, m is the person’s mass and RBE is the factor.

Q: Calculate the dose in Sv to the chest of a patient given anx-ray under the following conditions. The…

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Q: A cobalt-60 source with activity 2.60×10-4 Ci is embedded in a tumor that has mas 0.20 kg. The…

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Q: A technician is in an area for 10 minutes and the reading on the survey meter is 5mR/h. What dose of…

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Q: A 70-kg person experiences a whole-body exposure to alpha radiation (RBE=15) with energy 4.77 MeV. A…

A: It is given that,

Q: If the dose rate from a sample of Ra-223 was found to be 5.0 × 10-5 mSv per hour at 1.8 metres,…

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Radioactive decay

The emission of energy to produce ionizing radiation is known as radioactive decay. Alpha, beta particles, and gamma rays are examples of ionizing radiation that could be released. Radioactive decay happens in radionuclides, which are imbalanced atoms. This periodic table's elements come in a variety of shapes and sizes. Several of these kinds are stable like nitrogen-14, hydrogen-2, and potassium-40, whereas others are not like uranium-238. In nature, one of the most stable phases of an element is usually the most prevalent. Every element, meanwhile, has an unstable state. Unstable variants are radioactive and release ionizing radiation. Certain elements, including uranium, have no stable forms and are constantly radioactive. Radionuclides are elements that release ionizing radiation.

Artificial Radioactivity

The radioactivity can be simply referred to as particle emission from nuclei due to the nuclear instability. There are different types of radiation such as alpha, beta and gamma radiation. Along with these there are different types of decay as well.