laser beam or ultrasonic waves to atoms excitating

THATS AN EINSTIEN QUESTION, and he just step out for donuts.

electrons will be free and able to be attracted to an anode connected to a positive magnetic pole

It sound like electrolysis that your talking about. As far as ultrasonics, like lasers its energy, maybe if you have a transducer receiver its possible.

I know they use focused ultrasonic waves to smash kidney stones, never experienced it though.

Electrolysis does it far easier than laser beams.

As ultrasonics is merely high-frequency sound waves the answer is, er, no.

An electron will never be atracted by a magnet. An electron in movement is a curent and the magnetic field will exercise a force which will bend the path but it will not be atracted.

The answer is yes.

LASER of high energy (which you often know by color and not intensity) can excite and ionize atoms and molecules. UV laser more suitable for it.

Ultrasonic waves through particle can cause tribo-electricity or ionization by friction. We often know this as static electricity generating mechanism. Tribo-electricity on insulating material can accumulate large number of electrons or positive charge to build up voltage up to several kV which may again cause local spark by breakdown voltage and can further ionize air and water molecules near the surface.

You are right but never the less electrons CANNOT be atracted by a magnetic field

If you remember the "Flemings Left Hand Rule" and the way electric motor works then you will know that magnetic filed only makes electrons to move in a circular path if magnetic field is perpendicular to the plain of motion of the electrons.

If LASER can ionize atoms or molecules and can impart enough energy to the electron then such electrons will move in magnetic field influenced by the magnetic field. To collect electrons, positive electrode and electric field is required the way ionization chamber works.

Microphones in olden days used Carbon powder to generate electric current for the voice and even today one can use it.

You give a very complex explanation to what I put in simple words:

a magnetic field does not attract electrons but only exercise a force on moving electrons as on all electrically charged particles and this property is used for instance in the bubble chamber to visualize the path of particles which path is function of initial speed, charge, mass and field intensity.

Of course I remember how the Lorenz forces are acting.

If the initial speed is not perpendicular to the magnetic field only the perpendicular component is affected and the particle (electron or which ever) has an helical path.

As far as I remember old microphones used carbon powder as a variable resistor since the contact between carbon particles was more or less conductive according to the pressure exercised by speech air pressure. They were used to modulate current not to generate.