A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 141 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. The beam is directed onto a 0.190-kg tumor, which receives a biologically equivalent dose of 156 rem. How many nuclei are in the beam?

Q: During an X-ray examination, a person is exposed to radiation at a rate of 2.80×10-5 grays per…

A: Energy absorbed Eabs=Dtmt Here, Dt is the absorbed dose per second given in Gy/s.

Q: A 1.4-kg tumor is being irradiated by a radioactive source. The tumor receives an absorbed dose of…

A: Solution:-Given thatmass of tumor (m)=1.4 kgAbsorbed Dose (AD)=13 Gy1 Gy=1 J/kgAD=13 J/kgtime…

Q: A person with lymphoma receives a dose of 35 gray in the form of gamma radiation during a course of…

A: (i)   The energy absorbed by the cancerous tissue can be calculated as,

Q: A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the…

A: Given that,Mass of person (m) = 60 (kg)a: Here we need to find the number of alpha particles that…

Q: ching the tumor, ai le is 4.5 MeV. The R 14. Find the biolo dose given to the t

A: Given as, The energy particle= 4.5 MeV, Particle per second= 2.1x1010.

Q: Samarium-153, a radioactive isotope with a half-life of approximately 48 hours, is used to treat…

A: Given, Half life, T1/2=48hours=2 days

Q: To destroy a cancerous tumor, a dose of gamma radiation totalling an energy of 2.12J is to be…

A: The formula for the decay constant is:

Q: A scientist working near an improperly shielded y-ray source would receive an equivalent dose of 4.0…

A: When the scientist works in an improperly shielded gamma source, he receives a dose of  X0=4.0 mSv…

Q: A beam of particles is directed at a 0.012-kg tumor. There are 2.1 x 1010 particles per second…

A: Given: The mass of the tumor is 0.012 kg.            The number of particles per second is 2.1×1010.…

Q: If a patient undergoing radiation treatment for prostate cancer receives 41 Gray ( Gy G y ) of gamma…

A: If a patient undergoing radiation treatment for prostate cancer receives 41 Gray ( Gy G y ) of gamma…

Q: Radiation therapy departments use Cs-137 isotope for cancer treatment.  The room walls have concrete…

A:

Q: A 70-kg worker is accidentally exposed for 2.0 minutes to a 21-mCi source of beta radiation from a…

A: (a) Let M, T, and R denote the person’s mass, the time for exposure, and the radioactive sample’s…

Q: During a 2-h period of radiation therapy, alpha radiation is deposited into a patient's body at a…

A: time period (T) = 2 hr rate of deposition = 3.3×10-8 Jsmass of patient (m) = 59 kg radiation type :…

Q: The binding energy per nucleon of Li-7 and He-4 nuclei are 5.60 MeV and 7.06MeV respectively. In the…

A: The binding energy per nucleon is define as the binding energy of the nucleus divide by the number…

Q: A person with lymphoma receives a dose of 35 Gy in the form of y radiation during a course of…

A:

Q: A 267-rad dose of radiation is administered to a patient in an effort to combat a cancerous growth.…

A: d= 267 rad dose Cw=4186 J/kgoC m=0.25 kg

Q: Assume that a full CT scan of the spinal cord (columna vertebralis) of a patient delivers an…

A: The objective of this question is to calculate the total number of X-rays necessary to deliver a…

Q: A Geiger counter reading of a radioactive sample is initially 7020 counts per minute. The same…

A:

Q: Calculate the effective radiation dosage (in Sieverts) for a 63-kg person who is exposed to 4.3 x…

A:

Q: Geiger counter reading of a radioactive sample is initially 7220 counts per minute. The same sample…

A: Given: The initial amount is 7220 counts per minute. The final count is 422 counts per minute. The…

Q: Geiger counter reading of a radioactive sample is initially 6520 counts per minute. The same sample…

A: Given:Initial count rate, N0 =6520 count/minFinal count rate, N = 422 count/mintime, t = 10.1 hr

Q: using

A:

Q: 9. A 80-kg man is exposed to a beam of alpha particles, each of which imparts an energy of 100 MeV…

A:

Q: A Geiger counter reading of a radioactive sample is initially 6520 counts per minute. The same…

A:

Q: A patient receives a dose of radiation by ingesting a radioactive medication containing 32P, which…

A:

Q: A Geiger counter reading of a radioactive sample is initially 7420 counts per minute. The same…

A:

Q: A tumor is exposed to a beam of protons containing 2.6 × 1010 protons. If 25% of the beam energy is…

A: The total energy of the beam will be the product of the number of protons and the energy of a single…

Q: Calculate the effective radiation dosage (in Sieverts) for a 81-kg person who is exposed to 1.9 x…

A: Given: The weight of the person is 81 kg.            The number of alpha particle radiation that the…

Q: A 70-kg researcher absorbs 4.5 × neutrons in a work day, each of energy 1.2 MeV. The relative…

A: Given: Mass of researcher is m=70kg. Researcher absorbs in a day is n=4.5×108. Energy of each…

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: A person with lymphoma recieves a dose of 35 gray in the form of gamma radiation during a course of…

A: Energy absorbed by the tissue can be obtained as