Calculate the activity of these samples at the given times: 3.06 mCi l-131 (t₁/2 = 8.04 days) at 2.00 days after calibration 5.00 mCi Tc-99m (t1/2 = 6.02 hours) at 48.0 hrs after calibration 10 mCi Tc-99m (λ = 0.1155/hr) at 4.0 hours after calibration
Q: Q6. When a slab of material is inserted between a collimated 60ºCo source and a detector, it is…
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Q: Calculate the activity of a pure 9.5-μgμg sample of 32 over 15P (T1/2=1.23×106s).
A: Mass of sample (m) = 9.5 ×10-6 grams Molecular mass of P-32 = 32 grams Half life (T1/2) = 1.23×106…
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A: 1) Converting Counts Per Second to Becquerels We know that 1 becquerel (Bq) is defined as one…
Q: Why does a 99mTc generator need to be shipped once a week to hospitals? (a) What is the activity of…
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Q: The point source Co-60 emits gamma with energies of 1.17 MeV and 1.33 MeV. Each of these energies…
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Q: a sample with a half-life of 19 days has an initial activity of 7.0 x 10^5 counts/s. what isits…
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Q: A sample of 134La(T/2 = 6.5 min) has an activity of 4 curies. What was its activity one hour ago?
A: Final Activity A = 4 curies Half life T1/2 = 6.5 min time t = 1 hour = 60 min
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Q: RT(2) = V₁(V) = V2(V) = V3(V) = PE(MW) = Is E 20V Is(mA) = 11(mA) = 12(mA) = 13(mA) = --- R₁(1k0) {…
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Q: Control rods are usually made of an alloy of indium. The absorption cross-section of indium for…
A: Given data: Thickness (t) = 1 cm σ=71 barnρ=7.31 g/cm3 Need to determine the neutron transmission…
Q: Question : A water solution of the Tc-99m radiotracer has an initial radioactivity of 2 mCi/ml. The…
A: Given, Half-life of Tc-99m is t12=6 hr. Initial activity, A∘=2 mCi/ml. Time of activity, T=12…
Q: At a neutrino detection facility deep underground in an abandoned salt mine, a research team is…
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Q: When will 10 mCi of 1311 (T1/2 = 8.05 days) and 4 mCi of ³2P (T1/2 = 14.3 days) have equal…
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Q: An exposure using 10 mAs and 70 kVp results in a DI of +2.8. If you were going to fix this…
A: Given: Exposure mAs = 10 mAs. Peal voltage Vp = 70 kVp. Diagnostic image DI = +2.8. Let exposure…
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A: Given: For conventional radiography with a tungsten target, how much X-Ray beam intensity is due to…
Q: The fusion reaction shown is part of the proton-proton chain that occurs in the core of the sun.
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Q: Calculate the current produced when alpha particles (10 MeV) pass through a gas in ionization…
A: rate of particles = 600 particles / h = 600 /3600 particles/ second = 1/6 particles/ second We…
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Q: Radioactive Pm-147 decays by the release of a beta-particle with an average energy of 62.0 keV. A…
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Q: A 228Th source is labeled 1.50 mCi, but its present activity is found to be 3.47 ✕ 106 Bq. (a)What…
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Q: What is the initial intensity, l, of the 5 g Co source at a distance of 1m if gamma rays emitted by…
A: Intensity of a source is the average energy per unit surface area. At distance 1 mtr, gamma rays…
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- A radioisotope produces an intensity of 7.52 x 10^4 becquerel (Bq) at a distance of 1.00 cm from the source. What would be the intensity at 12.0 cm? Intensity = ______BqThe HVL for Pb for a particular energy x-ray is 0.1mm. By how much will an x-ray beam be reduced, if a lead sheet 1.5mm thick is placed in its path?Q1
- 2. Consider two gamma radioactive sources: S1 has activity 50 µCi (micro-Curie) and S2 has activity 25 µCi (micro-Curie). They are separated by 1 m. Assume that both sources are pointlike. s1 S2 1 m a) At which location along the dashed line passing by the two sources is the flux due to S1 equal to the flux due to S2 ? b) What is the gamma fluence in that location in a time interval of two minutes ?Please asapThe point source Co-60 emits gamma with energies of 1.17 MeV and 1.33 MeV. Each of these energies emits the same number of photon particles. At a certain location, the flux that is read is 5.7 x 109 photons/cm2.s, what is the intensity or energy flux with units of J/m^2.min
- A 0.025 nm X-ray source deposits 30 million photons into 10 grams of tissue. What is the absorbed dose in the tissue (in Gy)? What is the dose equivalent (in Sv)?In a controlled fusion reactor Deuterium-Tritium The temperature of the plasma is T = 10 keV, where k is the k Boltzmann constant. The ions' number density is 2.6×10¹8 m-3. -22 3 Moreover (ov) = 10-²²m³s-¹, where o is the reaction cross-section, v is the relative speed of the reacting particles, and represents averaging according to the Maxwell- Boltzmann distribution. fusion is occurring. For what value of the confinement time does the reactor achieve the break even point? Enter your answer in seconds to 1 decimal point.Calculate the activity of these samples at the given times: 2.2 mCi Tl-201 (t₁/2 = 73.1 hours) at 22 hrs before calibration 25 μCi Tc-99m at 12 hours before calibration 10 mCi F-18 at 3.5 hours before calibration wwww
- 3Find the activity of a sample Containing 701X 1019 10aine-131 nuciei (T1/2=8.0 days).The cross section for a 2.0-MeV neutron (a typical energy for a neutron released in fi ssion) being absorbed by a 238U nucleus and producing fi ssion is 0.68 barn. For a pure 238U sample of thickness 3.2 cm, what is the probability of a 2.0-MeV neutron producing fi ssion? (p = 19 g/cm3 for uranium)