Sparky,
What is the physical dimension of the electron's helical path?
I am suggesting that the radius of the helix is the so-called charge radius. If one were to consider sub-atomic particles as stationary objects (or at least relatively stationary) then I believe you would be fooling yourself. Since we know that the universe is in motion, it makes perfect sense to make the default assumption that sub-atomic and aethereal particles are also in constant motion on the scale of their own existence. Therefore, the physical radius of the physical objects that are electrons and protons has no useful meaning. The only useful meaning to radius is a smallest possible radius of interaction. I believe it a mistake to consider electrons and protons as having a realistically definable discrete size or shape, but instead to consider them to all intents and purposes as infinitely small and defined by their motion rather than their actual physical dimensions.
A helix has three fundamental dimensions: a radius of curvature (circular or elliptical), the pitch length (the distance between complete turns; this can also be considered the wavelength, since a helix is simply a 3-dimensional travelling wave motion), arc length (the distance along the curved path of one complete turn; also when you disregard the distance travelled along the wavelength and consider only the circular or elliptical distance, then it can be referred to as an "orbit".
For electrons, the ratio of the Compton wavelength (the de Broglie wavelength of an electron with a velocity of c) and the "circular" distance (orbit ?) is equal to Alpha, the electromagnetic coupling constant (i.e. the fine structure constant). So, alpha is defined as a ratio derived from the 3-dimensional range of motion of electrons.
I do not see any realistic hope of being able to "detect" such motion directly (even if funding is available

). Heisenberg pointed out the bleeding obvious, that you cannot detect such objects without inherently affectingly their travel.
Furthermore, I believe (from a logically deduced viewpoint) that what we identify as action-at-a-distance is impossible to achieve by the transmission of force or energy. I cannot reasonably conceive of the considerable forces that we observe being transmitted or projected from one object or location to another. Since the invisible nature of these "forces" leaves no other possible answer other than a universal aethereal field, then we must assume that the field interacts with every electron and proton at all times regardless of the proximity of other electrons and protons. Thus every electron and proton has at all times access to, by unavoidable interaction, a method of motion, that we then interpret as energy and force. Therefore, it is unreasonable and illogical to take the stance that energy and force are projected across great distances. Instead, matter interaction is a process of an exchange of subtle aethereal signals that travel through the field and affect the behaviour of other matter. The energy and motive force is at all times local to each and every electron and proton.
Michael