Strontium- 90 decays to yttrium-90, which in turn decays to stable zirconium. The isotopes of strontium and yttrium emit beta particles as they decay. The release of radiation during this decay process causes concern about the safety of strontium and all other radioactive substances.
What is the product of the beta decay of strontium-90?
Once in the body, Sr-90 acts like calcium and is readily incorporated into bones and teeth, where it can cause cancers of the bone, bone marrow, and soft tissues around the bone. Sr-90 decays to yttrium 90 (Y-90), which in turn decays by beta radiation so that wherever Sr-90 is present Y-90 is also present.
What is the daughter product that results from the beta decay of 90 Sr?
The most common radioisotope of strontium is strontium-90, which is a beta emitter. The daughter particle of strontium-90 is yttrium-90, which is also a beta emitter. Strontium-90-yttrium-90 is commonly used in sealed beta sources.
What element does strontium decay into?
Strontium-90, a radioactive isotope of strontium, is a common product of nuclear explosions. It has a half-life of about 28.8 years and decays into yttrium-90 through beta decay.
What does 90 38 Sr become after beta decay?
It undergoes β− decay into yttrium-90, with a decay energy of 0.546 MeV. Strontium-90 has applications in medicine and industry and is an isotope of concern in fallout from nuclear weapons, nuclear weapons testing, and nuclear accidents.
What is the end product of beta decay?
In beta minus (β−) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino; while in beta plus (β+) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. β+ decay is also known as positron emission.
What are the products of a beta decay process?
One type (positive beta decay) releases a positively charged beta particle called a positron, and a neutrino; the other type (negative beta decay) releases a negatively charged beta particle called an electron, and an antineutrino.
When strontium-90 undergoes beta emission what element does it become with the correct mass and proton designation?
The additional proton increases the atomic number of the element by 1 while not changing its mass number. Hence, the resultant nuclide for the beta emission of strontium-90 must have an atomic number of 39, corresponding to the element yttrium.
What is the daughter nucleus from the beta decay?
Thus, negative beta decay results in a daughter nucleus, the proton number (atomic number) of which is one more than its parent but the mass number (total number of neutrons and protons) of which is the same. For example, hydrogen-3 (atomic number 1, mass number 3) decays to helium-3 (atomic number 2, mass number 3).
What is a daughter element in radioactive decay?
Daughter: the new isotope formed as a result of radioactive decay of parent.
Is strontium-90 a beta emitter?
Strontium-90 has a half- life of 29 years and emits beta particles of relatively low energy as it decays.
What particle would be produced from the beta decay of strontium 89?
Strontium-89 decays to yttrium-89 by emission of a negative beta-particle with a maximum energy of 1.495 MeV.
What is the nuclear equation for the decay of strontium-90?
Strontium-90 decays with the emission of a `beta-` particle to form Ytrium-90 . The reaction is represented by the equation
`_(38)Sr^(90) rarr _(39)Y^(90) + _(-1)e^0 + 0.55 MeV` the decay constant is `0.025 year ^(-1)`.