Fabrication of thin Molybdenum backed target using rolling method

Anand Pandey; Ravi Bhushan; Aman Rohilla; S Chakraborty; R P Singh; Sunil Ojha; D Mehta; Kailash; Sanjeev Kumar; S K Chamoli

doi:10.1016/j.apradiso.2023.110860

Fabrication of thin Molybdenum backed target using rolling method

Appl Radiat Isot. 2023 Sep:199:110860. doi: 10.1016/j.apradiso.2023.110860. Epub 2023 May 29.

Authors

Anand Pandey¹, Ravi Bhushan¹, Aman Rohilla², S Chakraborty³, R P Singh⁴, Sunil Ojha⁴, D Mehta⁵, Kailash⁵, Sanjeev Kumar⁶, S K Chamoli⁷

Affiliations

¹ Department of Physics & Astrophysics, University of Delhi, New Delhi, India.
² Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of China.
³ Variable Energy Cyclotron Centre, Kolkata 700064, India.
⁴ Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi, India.
⁵ Department of Physics, Punjab University, Chandigarh, India.
⁶ Goswami Ganesh Dutta Sanatan Dharma College, Sector 32 Chandigarh, India.
⁷ Department of Physics & Astrophysics, University of Delhi, New Delhi, India. Electronic address: skchamoli@physics.du.ac.in.

PMID: 37290268
DOI: 10.1016/j.apradiso.2023.110860

Abstract

A successful attempt was made to fabricate a thin foil of natural Mo target on a thick Au backing with Indium in between to improve adhesion between the foils. Rolling at elevated temperature was considered to fabricate Mo foil while gold foil was fabricated employing conventional rolling technique. The heating of Mo foil under natural environment lead to the oxidation or carbonization on foil surface which was confirmed through Energy Dispersive X-ray Spectroscopy (EDS) measurements. Indium of thickness ∼86μg/cm² was evaporated on Mo foil to improve adhesion between Mo and Au foils. The characterization of fabricated thin Mo foil was done using the Energy Dispersive X-ray Spectroscopy (EDS) and the Scanning Electron microscope (SEM) techniques. Thickness measurement of the target (Mo-Au) was done using Energy Dispersive X-ray Fluorescence (EDXRF) technique, in the measurements the thickness of the Mo foil and of gold backing are found out to be 1.3 mg/cm² and 9 mg/cm² respectively.

Keywords: EDS technique; EDXRF technique; Mo target; SEM technique.