Below are the technical specifications I found online (as I'm not an expert in this field):
A scintillator—a radiation detector—is likely attached to the tube.
The Hamamatsu R6095-03 photomultiplier is often used in conjunction with scintillators, creating a ready-made detector for gamma spectroscopy or scintillation counters.
Looking at the appearance of the element in the photo, you can see that:
The crystal has transparent edges and a geometrically rectangular shape, which is typical of scintillators, not optical glass prisms.
This element, attached to the R6095-03 photomultiplier, is a scintillator—it generates light in response to ionizing radiation (e.g., gamma), which is then detected by the photomultiplier. This combination creates a complete scintillation detector for applications such as gamma spectroscopy or scintillation counters.
Spectral Matching
The Hamamatsu R6095-03 photomultiplier has a spectral range of 300–650 nm, with a peak sensitivity around 420 nm—ideally matching the scintillator emission.
Mounting Method
The scintillation crystal is optically coupled to the photomultiplier window using a special gel or optical adhesive (coupling compound), minimizing reflections and signal loss.
Summary
Based on its shape, mounting method, and spectral matching, it is highly probable that the Hamamatsu R6095-03 attached to the photomultiplier is a scintillation crystal.
It is the standard choice for ionizing radiation detectors such as scintillation counters and gamma spectrometers.
I always made good box to delivery
Items will be shipped from Poland via international registered mail
within 2-3 business days after payment is received and verified
I always try to combine delivery to the same ebuyer
after shopping ask me only about cost all items you bought in one box