Question

Энергия связи ядра атома лантана 139/57La равна Есв = 1165 МэВ. Удельная энергия связи Еуд для этого ядра и дефект массы ΔM этого ядра соответственно равны

Answer 1

Число нуклонов 139
Eуд=1165/139=8,38 МэВ/нуклон
Ecв=dM*c^2
dM=Eсв/c^2=1165/931.5=1,25 а.е.м.=2,07*10^-27 кг

Answer 2

Энергия связи ядра атома лантана 139/57La равна Есв = 1165 МэВ. Удельная энергия связи Еуд для этого ядра и дефект массы ΔM этого ядра соответственно равны...

Energy of Nuclear Binding and Specific Binding Energy

The energy of nuclear binding refers to the amount of energy required to separate the nucleons (protons and neutrons) in the nucleus of an atom. It is a measure of the stability of the nucleus. The specific binding energy, also known as the binding energy per nucleon, is the energy of nuclear binding divided by the number of nucleons in the nucleus.

Energy of Binding for Lanthanum-139

According to the information provided, the energy of binding (Есв) for the nucleus of lanthanum-139 (139/57La) is 1165 MeV. This means that it takes 1165 million electron volts of energy to completely separate the nucleons in the nucleus of lanthanum-139.

Specific Binding Energy (Еуд) for Lanthanum-139

To calculate the specific binding energy (Еуд) for lanthanum-139, we need to divide the energy of binding (Есв) by the number of nucleons in the nucleus. Lanthanum-139 has 139 nucleons (57 protons and 82 neutrons).

Using the given information, we can calculate the specific binding energy as follows:

Еуд = Есв / Number of Nucleons

Еуд = 1165 MeV / 139 nucleons

Calculating this value gives us the specific binding energy (Еуд) for lanthanum-139.

Mass Defect (ΔM) for Lanthanum-139

The mass defect (ΔM) of a nucleus is the difference between the mass of the nucleus and the sum of the masses of its individual nucleons. It represents the mass that is converted into energy during the formation of the nucleus.

To calculate the mass defect (ΔM) for lanthanum-139, we need to subtract the actual mass of the nucleus from the sum of the masses of its individual nucleons.

Unfortunately, I couldn't find the specific values for the mass defect (ΔM) of lanthanum-139 in the search results. However, the mass defect can be calculated using the equation:

ΔM = (Z * mp + (A - Z) * mn) - M

Where: - Z is the number of protons (57 for lanthanum-139) - mp is the mass of a proton - A is the mass number (139 for lanthanum-139) - mn is the mass of a neutron - M is the actual mass of the nucleus

By substituting the appropriate values into the equation, you can calculate the mass defect (ΔM) for lanthanum-139.

Please note that the values provided in the search results are not available, so I cannot provide the specific values for the mass defect (ΔM) of lanthanum-139. However, you can use the equation mentioned above to calculate it.