Fabrication and characterization of thin targets of nickel (61,62Ni) isotopes by physical vapour deposition technique for nuclear reaction studies

Deb, Nabendu Kumar; Abhilash, S.R.; Giri, Pankaj K.; Biswas, Rohan; Umapathy, G.R.; Kabiraj, D.; Chopra, Sundeep

doi:10.1016/j.vacuum.2019.01.050

Cited by 18 publications

(9 citation statements)

References 30 publications

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“…The stacked foil activation technique followed by off-line γ-spectroscopy was used to measure the FRRDs of ERs produced in the reaction of 169 Tm (∼100% abundance) target with 14 N projectile. The 169 Tm target foil of thickness ∼0.5 mg cm −2 was prepared using the rolling technique [29] in the target fabrication lab of IUAC. The thin Al-catcher foils were prepared using thermal evaporation vacuum deposition technique [30].…”

Section: Methodsmentioning

confidence: 99%

“…Precise value of thickness of the target and Al-catcher foil is very important in the measurement of absolute cross-section of reaction residues. Therefore, their thickness was determined using the α-transmission method [29]. This method is based on energy loss per unit length by α-particles emitted from the 241 Am source having peak-energy at ∼5.487 MeV.…”

Section: Methodsmentioning

confidence: 99%

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Study of incomplete fusion reaction dynamics for the system ¹⁴N + ¹⁶⁹Tm using the forward Recoil Range distribution technique

Kumar¹,

Giri²,

Kumar³

et al. 2022

J. Phys. G: Nucl. Part. Phys.

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Studies in the past have demonstrated that complete fusion and incomplete fusion dynamics are both significant just above the Coulomb barrier, yet the dynamics of incomplete fusion are elusive since they are so complex below 10 MeV/nucleon. In order to investigate low-energy incomplete fusion dynamics, we measured the forward recoil range distribution of evaporation residues populated in the system 14N + 169Tm at energy ≈ 5.9 MeV/nucleon. A stack target-catcher activation technique followed by offline-γ- spectroscopy was used to estimate the forward recoil range distribution of the evaporation residues. In order to investigate a new parameter for describing incomplete fusion dynamics, the incomplete fusion fraction (FICF (%)) for the present system was estimated from the range-integrated cross-sections and compared with other systems in the literature. The forward recoil range distribution and range integrated cross-sections of seven evaporation residues have been estimated experimentally. These cross-section results agree well with the experimental results obtained from the excitation functions. On re-investigation of entrance channel systematics for Qα value of projectile, mass-asymmetry (µMA), and Coulomb factor (ZP ZT ), it has been found that the Qα-value systematic for 14N is not valid at all projectile energies. The forward recoil range distribution measurement is one of the direct methods available to probe the complete and incomplete fusion contributions in evaporation residues at low projectile energy. It has also been observed that the dynamics of ICF are not only dependent on the parameters of one entrance channel but on multiple entrance channels. We have also introduced the entrance channel parameter Zeta (ζ) for the first time in Incomplete Fusion reactions to see the combined effect of mass-asymmetry (µMA) and ZP ZT, as this parameter is better suited than µMA and ZP ZT individually and has a linear dependency on FICF (%).

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Study of incomplete fusion reaction dynamics for the system ¹⁴N + ¹⁶⁹Tm using the forward Recoil Range distribution technique

Kumar¹,

Giri²,

Kumar³

et al. 2022

J. Phys. G: Nucl. Part. Phys.

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“…During the fabrication of each sample, a fresh glass slide was placed on the empty slot of the target ladder as shown in figure 2(c). This placement allowed the glass slide to receive a similar deposition [21] of Si material as the target. As a result of this, a step of deposition was formed on the glass slide.…”

Section: Surface Profilometer Measurementmentioning

confidence: 99%

Fabrication of ¹⁹⁷Au-backed Silicon target for In-beam Gamma-ray spectroscopy experiment

S.R.,

Sharma,

Kumar

et al. 2024

J. Inst.

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The fabrication of stable 197Au-backed natural Si targets with a thickness ranging from ∼ 400 μg/cm2 to ∼ 1.1 mg/cm2 using an electron beam evaporation technique is discussed. In one of the attempts, a graphite sheet was used as an evaporation source, which proves to be an efficient method in terms of minimal wastage of source material. Characterizations of the fabricated targets using various technique revealed that the targets were uniform in thickness and had negligible contamination. The optimization of evaporation parameters in the present work enhances the potential for future fabrication of isotopically enriched Si targets.

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“…The vacuum chamber used for the preparation of the targets is shown in figure 1. The target for the desired thickness of enriched isotope material is prepared after setting the parameters like, material quantity, distance between source and substrate, distance between source and quartz, appropriate parting agent, and tubular boat or crucible for resistive heat evaporation [8,10]. The limited availability of isotopic material is one of the constraints to preparing the isotopic targets.…”

Section: Fabrication Of Thin Films Using Natural Silvermentioning

confidence: 99%

“…The requirements of the targets are not only about the elemental purity, but also about uniformity in the thickness, stability under external conditions, and suitable backing and capping materials [8,9]. The high vacuum and ultra high vacuum vapour deposition techniques can fulfil the above requirements to fabricate the desired targets for nuclear reaction experiments [10][11][12]. It is also interesting to investigate a suitable parting agent which can help to relieve the deposited film from the glass substrate.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of the self support enriched ^{107, 109}Ag thin targets for heavy ion induced transfer reaction

Vinayak¹,

Abhilash²,

Hosamani³

et al. 2022

J. Inst.

Self Cite

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The enriched, self-supported, and thin isotopic targets of 107Ag and 109Ag were fabricated at the target development laboratory, IUAC New-Delhi, using a vacuum deposition facility. The targets were fabricated by the thermal evaporation technique with minimum material consumption. The simple and efficient method for the fabrication of thin targets with high quality without major impurities was discussed in detail. The prepared targets were characterised by using Rutherford Backscattering Spectrometry, X-Ray Diffraction, Total-Reflection X-Ray-Fluorescence and Scanning-Electron-Microscope techniques. From the characterizations, it was found that the fabricated targets were quite stable, had the same crystalline nature, the absence of any other elements, and were suitable for nuclear reaction experiments.

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Fabrication and characterization of thin targets of nickel (61,62Ni) isotopes by physical vapour deposition technique for nuclear reaction studies

Cited by 18 publications

References 30 publications

Study of incomplete fusion reaction dynamics for the system ¹⁴N + ¹⁶⁹Tm using the forward Recoil Range distribution technique

Study of incomplete fusion reaction dynamics for the system ¹⁴N + ¹⁶⁹Tm using the forward Recoil Range distribution technique

Fabrication of ¹⁹⁷Au-backed Silicon target for In-beam Gamma-ray spectroscopy experiment

Fabrication and Characterization of the self support enriched ^{107, 109}Ag thin targets for heavy ion induced transfer reaction

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Fabrication and characterization of thin targets of nickel (61,62Ni) isotopes by physical vapour deposition technique for nuclear reaction studies

Cited by 18 publications

References 30 publications

Study of incomplete fusion reaction dynamics for the system 14N + 169Tm using the forward Recoil Range distribution technique

Study of incomplete fusion reaction dynamics for the system 14N + 169Tm using the forward Recoil Range distribution technique

Fabrication of 197Au-backed Silicon target for In-beam Gamma-ray spectroscopy experiment

Fabrication and Characterization of the self support enriched 107, 109Ag thin targets for heavy ion induced transfer reaction

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Product

Resources

About

Study of incomplete fusion reaction dynamics for the system ¹⁴N + ¹⁶⁹Tm using the forward Recoil Range distribution technique

Study of incomplete fusion reaction dynamics for the system ¹⁴N + ¹⁶⁹Tm using the forward Recoil Range distribution technique

Fabrication of ¹⁹⁷Au-backed Silicon target for In-beam Gamma-ray spectroscopy experiment

Fabrication and Characterization of the self support enriched ^{107, 109}Ag thin targets for heavy ion induced transfer reaction