S.R. Abhilash
Cochin University of Science and Technology
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Publications 57
#1P. P. Baburaj (CUSAT: Cochin University of Science and Technology)
#2S.R. Abhilash (CUSAT: Cochin University of Science and Technology)H-Index: 13
Last. A. K. Sahai (IITM: Indian Institute of Tropical Meteorology)H-Index: 21
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In this paper we examine the epochal changes in the frequency of cyclones over the North Indian Ocean during the pre-onset and onset phases of the monsoon. We consider three epochs; namely, the early (1955−74), middle (1975−94) and recent (1995−2014) epochs. It is found that the number of cyclones in the Bay of Bengal (BOB) decreases throughout the three epochs. Over the Arabian Sea (ARB), however, there is a decrease in the early epoch, before then reaching a minimum in the middle epoch followe...
#1Kavita Rani (Panjab University, Chandigarh)H-Index: 3
#2S.R. AbhilashH-Index: 13
Last. Bivash R. Behera (Panjab University, Chandigarh)H-Index: 12
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Abstract Various fabrication techniques of thin films of lanthanides are very well known. Two major techniques, electron gun deposition and thermal resistivity method have been employed here to know their validity in using the fabricated thin films of Samarium (Sm) for elastic cross-section measurements. The purity and thickness of these prepared targets have been verified and confirmed by using several advanced techniques. These targets have also been irradiated during one of the recent nuclear...
#1A Sood (IIT-RPR: Indian Institute of Technology Ropar)H-Index: 4
#2G.R. UmapathyH-Index: 4
Last. Pushpendra P. Singh (IIT-RPR: Indian Institute of Technology Ropar)H-Index: 15
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Abstract Self-supporting thin films of 116,118Sn isotopes have been fabricated using ultra-high vacuum (UHV) facility at the Inter-University Accelerator Centre (IUAC), New Delhi. Owing to the requirements for fusion and quasi-elastic backscattering studies, several self-supporting thin target films with areal density ∼ 250-600 μg/cm2 were fabricated. Attempts were also made to prepare thin films by cold rolling technique, and an areal density of ∼ 1.8 mg/cm2 could be achieved after several roll...
1 CitationsSource
#1Suryachandra A. Rao (IITM: Indian Institute of Tropical Meteorology)H-Index: 25
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AbstractIn spite of the Summer Monsoon’s importance in determining the life and economy of agriculture-dependent country like India, committed efforts towards improving its prediction and simulatio...
#1Neelam (DU: University of Delhi)
#1Neelam (DU: University of Delhi)
Last. Devinder Mehta (Panjab University, Chandigarh)H-Index: 24
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Abstract The isotopically enriched T 130 e targets of ∼ 1.2 m g / c m 2 thickness were fabricated on 4–6 m g / c m 2 gold ( A u ) backing. The vapor deposition method was employed using the resistive heating technique. To minimize the material consumption and increase the deposition efficiency, an indigenously developed graphite crucible with 1 mm opening was used to deposit T 130 e metal powder at a minimum source to substrate distance of 2 cm. A heat shield was placed at 1 cm above the graphit...
#1Pankaj K. GiriH-Index: 5
#2Amritraj MahatoH-Index: 4
Last. S. ChopraH-Index: 6
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#1Priya Sharma (Panjab University, Chandigarh)H-Index: 5
#2Bivash R. Behera (Panjab University, Chandigarh)H-Index: 12
Last. Heena Duggal (Panjab University, Chandigarh)H-Index: 4
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Abstract Sandwiched 142 , 150 Nd targets of thickness ( ∼ 100– 150 μ g /cm 2 ) have been fabricated between two carbon layers of different thickness ( ∼ 30 μ g /cm 2 and ∼ 10 μ g /cm 2 ) using the thermal evaporation technique in the diffusion pump based coating unit at the target lab of Inter University Accelerator Center (IUAC), New Delhi. Thickness and purity measurement of the targets have been confirmed by using the Rutherford backscattering spectrometry (RBS) technique and energy dispersiv...
1 CitationsSource
#1A. Banerjee (DU: University of Delhi)H-Index: 1
#2G.R. UmapathyH-Index: 4
Last. S. Mandal (DU: University of Delhi)H-Index: 10
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Abstract For the first time, to the best of our knowledge, a comprehensive study has been carried out to investigate the effects of ion beam on erbium thin films. Thin enriched erbium films with areal density ∼50–200 μg/cm2 sandwiched between carbon films were prepared using the high vacuum deposition technique. The samples were bombarded with fluorine ion beam accelerated to 90 MeV energy using a tandem accelerator. Irradiation time was varied for each sample. Accelerator based characterization...
1 CitationsSource
#1S. S. Tiwary (BHU: Banaras Hindu University)H-Index: 4
#2H. P. Sharma (BHU: Banaras Hindu University)H-Index: 6
Last. S. MuralitharH-Index: 11
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Abstract Stable isotopic iodine targets were fabricated using potassium iodide (KI) compound on gold and lead backings and used in a heavy ion induced in-beam γ-ray spectroscopy experiment. Due to the hygroscopic nature of iodide compounds, a very thin gold capping was used to protect the targets from getting hydrated. The mechanical, chemical and thermal stability of these targets was tested. The KI target on gold backing was found more stable compared to other iodide targets. In order to deter...
2 CitationsSource
#1A. Dey (Savitribai Phule Pune University)H-Index: 3
#2Rajib Chattopadhyay (IITM: Indian Institute of Tropical Meteorology)H-Index: 16
Last. S.R. Abhilash (CUSAT: Cochin University of Science and Technology)H-Index: 13
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Several methods are available to track the intraseasonal oscillation, namely the Madden–Julian oscillation (MJO) and monsoon intraseasonal oscillation (MISO). However, no methods to track both the modes in a uniform framework for real-time application exist. A new method to track the smooth propagation of the MJO and MISO is proposed to use it for real-time monitoring. The new approach is based on extended empirical orthogonal function (EEOF) analysis of the combined field of meridionally averag...
2 CitationsSource