A radiation assembly configured to communicatively couple to a spectrum analyser. said radiation assembly comprising: an enclosure having a chamber maintained at a controlled atmospheric condition with respect to ambient outside said chamber: an aperture extending through said enclosure; a window covering said aperture, said window configured to permit radiation to pass through, said window is configured to prevent the passage of fluids and particles through the aperture into said chamber; and a protective device removably coupled to an exterior surface of said enclosure, said exterior surface oriented orthogonally to said windows, said protective device covering said window and characterised by maintaining a space of a predefined distance between said window and said protective device, said protective device comprising: a plurality of holes at least partially aligned with the aperture; and a first coating proximate said plurality of holes, said first coating configured to absorb X-rays of energies determined to interfere with a spectrum analysis performed by the spectrum analyser: said protective device configured to permit at least some radiation to pass through the plurality of holes, said protective device configured to prevent objects larger than each of the plurality of holes to contact the window. an enclosure having a chamber maintained at a controlled atmospheric condition with respect to ambient outside said chamber: an aperture extending through said enclosure; a window covering said aperture, said window configured to permit radiation to pass through, said window is configured to prevent the passage of fluids and particles through the aperture into said chamber; and a protective device removably coupled to an exterior surface of said enclosure, said exterior surface oriented orthogonally to said windows, said protective device covering said window and characterised by maintaining a space of a predefined distance between said window and said protective device, said protective device comprising: a plurality of holes at least partially aligned with the aperture; and a first coating proximate said plurality of holes, said first coating configured to absorb X-rays of energies determined to interfere with a spectrum analysis performed by the spectrum analyser: an aperture extending through said enclosure; a window covering said aperture, said window configured to permit radiation to pass through, said window is configured to prevent the passage of fluids and particles through the aperture into said chamber; and a protective device removably coupled to an exterior surface of said enclosure, said exterior surface oriented orthogonally to said windows, said protective device covering said window and characterised by maintaining a space of a predefined distance between said window and said protective device, said protective device comprising: a plurality of holes at least partially aligned with the aperture; and a first coating proximate said plurality of holes, said first coating configured to absorb X-rays of energies determined to interfere with a spectrum analysis performed by the spectrum analyser: a plurality of holes at least partially aligned with the aperture; and a first coating proximate said plurality of holes, said first coating configured to absorb X-rays of energies determined to interfere with a spectrum analysis performed by the spectrum analyser: