In physics, the load to mass ratio and the specific load? What are they?

"Specific charge" and "charge-to-mass ratio" are different names for the same concept, and both of them denote the ratio of the amount of charge to the mass of a charged particle.

Thomson, a British scientist, was the first to use a magnetic field to determine the charge-to-mass ratio of electrons. The ratio of the electric amount of a charged particle to its mass is one of the important data of elementary particles. The determination of charge-to-mass ratio is an important method to study the structure of charged particles and matter.

The charge-to-mass ratio is also known as specific charge and specific charge. is the ratio of the charge carried by a charged particle to its mass.

The charge-to-mass ratio is also known as the specific charge. It is equal to the ratio of the charge q to its mass m of the charged particle q m. The ratio of the amount of charge of a charged particle (whether positive or negative) to its mass is the charge-to-mass ratio of the particle.

The ratio of the electron quantity e to the electron static mass m e m. One of the fundamental constants of electrons. It is also known as electron specific charge.

In 1897, Thomson measured the charge-to-mass ratio of cathode ray particles by electromagnetic deflection, which was about 2,000 times larger than the charge-to-mass ratio of monovalent hydrogen ions in electrolysis, and thus discovered the material unit that is smaller than hydrogen atoms, named electrons. The value of the electron-charge-to-mass ratio is accurately measured as coulombs kilograms, and the mass of the electron can be determined based on the determination of the electron's charge.

Question 1: What is the mass-to-charge ratio? The mass-to-charge ratio refers to the ratio of the mass of the charged particle to the charge (m e or m q); It is usually said that the ratio of the mass of the charged particle bucket companion to the number of charges (m z), where the mass m is in atomic mass (au) and the charge number z is in proton charge (e), so m z is a dimensionless number.

For example, m z = 1 1 = 1 for hydrogen pina ions (protons) and m z = 15 1 = 15 for a positively charged methyl CH3+.

The reciprocal of the mass-to-charge ratio is the load-to-mass ratio (q m), also known as the specific load, the accurate measurement of the electron specific charge is c kg, the proton specific charge is c kg, and the general calculation takes 1 10 8 c kg. When general physics involves subatomic particles, the charge-to-mass ratio (q m) is mostly used; Chemistry mainly involves polyatomic molecular ions, and the mass-to-charge ratio (mz) is mostly used.

In mass spectrometry (MS) analysis, when the initial velocity v of the incident particle and the deflection magnetic field strength b are given, the trajectory of the particle is semicircular, qvb = mv 2 r, and the trajectory radius r = mv qb, which is proportional to the mass-to-charge ratio m q (equivalent to m z) of the particle, which is the principle of mass spectrometry analysis.

Question 2: How to understand the mass-to-charge ratio? The value of mass divided by the amount of charge.

Question 3: Where is the nearest telecommunications bureau to Xinzhuang subway station? There is one next to the Dragon Dream in Xinzhuang, but there are usually a lot of people in line.

Question 4: How to calculate the charge-to-mass ratio of protons, tritium nuclei and particles? Basic data: the nuclear charge number of proton tritium is 1 (the unit is the element charge e=, the charge number of the alpha particle is 2, and the mass of the three is 1,3,4 (the unit is the mass of one proton mp=

In the same magnetic field, the orbital radius of the charge r=mv qb, because the three particles are burned with their b and v are the same, so the radius is inversely proportional to the specific charge, from the previous data, it can be seen that the specific charge of the three is 1 1, 1 3, 2 4 = 1 2, so the proton radius with the largest specific charge is the smallest, and the tritium nucleus with the smallest specific charge has the largest radius, choose c

The mass-to-charge ratio refers to the ratio of the mass of the charged particle to the charge (m e or m q); It is usually said that the ratio of the mass of the charged particle to the number of charges (m z), where the mass m is in atomic mass (au) and the charge number z is in proton charge (e), so m z is a dimensionless number. For example, m z = 1 1 = 1 for hydrogen ions (protons) and m z = 15 1 = 15 for a positively charged methyl CH3+.

The reciprocal of the mass-to-charge ratio is the load-to-mass ratio (q m), also known as the specific charge, and the specific charge of electrons is accurately measured as c kg, and the specific charge of protons is.

c kg, 1 10 8 in general calculations

c/kg。When general physics involves subatomic particles, the charge-to-mass ratio (q m) is mostly used; Chemistry mainly involves polyatomic molecular ions, and the mass-to-charge ratio (mz) is mostly used.

In mass spectrometry (MS) analysis, when the initial velocity v of the incident particle and the deflection magnetic field strength b are given, the trajectory of the particle is semicircular, qvb = mv 2 r, and the trajectory radius r = mv qb, which is proportional to the mass-to-charge ratio m q (equivalent to m z) of the particle, which is the principle of mass spectrometry analysis.

The charge-to-mass ratio, also known as specific charge and specific charge, is the ratio of the charge carried by a charged particle to its mass, and its unit is c kg. In the calculation, the particle should always be substituted into the positive value calculation, regardless of the charge.

Question 1: What does the mass-to-charge ratio mean The mass-to-charge ratio is the amount of charge in the mass-to-charge ratio, which is m q

Question 2: What is the mass-to-load ratio? The mass-to-charge ratio refers to the ratio of the mass of the charged particle to the charge (m e or m q); It is usually said that the ratio of the mass of the charged particle to the number of charges (m z), where the mass m is in atomic mass (au) and the charge number z is in proton charge (e), so m z is a dimensionless number.

For example, m z = 1 1 = 1 for hydrogen ions (protons) and m z = 15 1 = 15 for a positively charged methyl CH3+.

The reciprocal of the mass-to-charge ratio is the load-to-mass ratio (q m), also known as the specific load, the accurate measurement of the electron specific charge is c kg, the proton specific charge is c kg, and the general calculation takes 1 10 8 c kg. When general physics involves subatomic particles, the charge-to-mass ratio (q m) is mostly used; Chemistry mainly involves polyatomic molecular ions, and the mass-to-charge ratio (mz) is mostly used.

In mass spectrometry (MS) comic analysis, when the initial velocity v of the incident particle and the deflection magnetic field strength b are given, the trajectory of the particle is semicircular, qvb=mv 2 r, and the trajectory radius r=mv qb, which is proportional to the mass-to-charge ratio m q (equivalent to m z) of the particle, which is the principle of mass spectrometry.

Question 3: What is the mass-to-charge ratio of sodium ions? The charged charge of a sodium ion q = the mass of a sodium ion m = m na = 23 (so the charge-to-mass ratio of sodium ions = q m = =

Question 4: Where is the nearest telecommunications bureau to Xinzhuang subway station? There is one next to the dream of the dragon in Xinzhuang, but there are usually a lot of people lining up to fight.

Charge-to-mass ratio: is the ratio of the charge of the electron band to the mass of the electron.

That's what it means, what's the use?

For example, if a charged particle moves in a magnetic field, if it is only subject to the Lorentz force (a kind of magnetic field force that will be learned later), then the radius of the particle's motion is r=mv (bq).

b is the strength of the magnetic field. m q is the reciprocal of the charge. This will be used in the calculation. The principle of the velocity selector is this change, only objects with a certain specific load (a certain velocity) have a fixed radius. Based on this, you can select particles.

The mass-to-charge ratio refers to the ratio of the mass of the charged ion to the charged charge, expressed in m e.

The mass-charge ratio refers to the ratio of the mass of the charged ion to the charged charge, expressed in m e. It is an important parameter in mass spectrometry, and the radius r of an arc trajectory formed by ions with different m e values is proportional to m e under a certain accelerating limb signal pressure v and a certain magnetic field strength e.