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Heavy-ion beam induced effects in enriched gadolinium target films prepared by molecular plating.
- Source :
-
Nuclear Instruments & Methods in Physics Research Section B . Sep2017, Vol. 407, p256-264. 9p. - Publication Year :
- 2017
-
Abstract
- A series of enriched gadolinium (Gd, Z = 64) targets was prepared using the molecular plating process for nuclear physics experiments at the Cyclotron Institute at Texas A&M University. After irradiation with 48 Ca and 45 Sc projectiles at center-of-target energies of E cot = 3.8–4.7 MeV/u, the molecular films displayed visible discoloration. The morphology of the films was examined and compared to the intact target surface. The thin films underwent a heavy-ion beam-induced density change as identified by scanning electron microscopy and α-particle energy loss measurements. The films became thinner and more homogenous, with the transformation occurring early on in the irradiation. This transformation is best described as a crystalline-to-amorphous phase transition induced by atomic displacement and destruction of structural order of the original film. The chemical composition of the thin films was surveyed using energy dispersive spectroscopy and X-ray diffraction, with the results confirming the complex chemistry of the molecular films previously noted in other publications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GADOLINIUM
*ELECTROPLATING
*ION beams
*MONOMOLECULAR films
*X-ray diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 0168583X
- Volume :
- 407
- Database :
- Academic Search Index
- Journal :
- Nuclear Instruments & Methods in Physics Research Section B
- Publication Type :
- Academic Journal
- Accession number :
- 124630136
- Full Text :
- https://doi.org/10.1016/j.nimb.2017.07.012