'beam divergence' is a valid phrase to use in written English.
Example Sentence: The beam divergence in the new laser technology was much greater than anticipated.
The full line indicates the electron beam divergence angle.
The beam divergence of the primary beam is 0.007°.
The beam divergence limits the maximal possible finesse, due to the finite mirror size.
Moseley H, Davison M, Allan D. Beam divergence of medical lasers.
Using this method, 15 probe beam divergence angles were measured.
The received SNR is degraded by a combination of two factors: beam divergence loss and atmospheric attenuation.
Beam divergence loss is caused by the geometric spreading of the electromagnetic field as it travels through space.
The visibility of these interferences can then be used to determine the rms beam divergence.
A gradually tapered focusing neutron guide is used to deliver desired beam divergence at sample position.
The sensor uses an angular interrogation scheme and the FDOE delivers 15° angular beam divergence.
It has a precision of 1.4 μrad limited by the electron beam divergence.
