chemistry

Sisir Kumar Sarkar

Sisir Kumar Sarkar is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sisir Kumar Sarkar rather than just read about it. In short: Sisir Kumar Sarkar (Bengali: শিশির কুমার সরকার; born 25 April 1953) is an Indian Bengali scientist associated with the Bhabha Atomic Research Center. He is best known for his contributions to photo-physics and photochemistry in nuclear fuel cycle and chemical dynamics.

Key takeaways

Sisir Kumar Sarkar belongs to chemistry; place it in that map before memorising details.
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Reference excerpt

Sisir Kumar Sarkar (Bengali: শিশির কুমার সরকার; born 25 April 1953) is an Indian Bengali scientist associated with the Bhabha Atomic Research Center. He is best known for his contributions to photo-physics and photochemistry in nuclear fuel cycle and chemical dynamics.

Biography Sarkar was born on April 25, 1953, in Medinipur, West Bengal, India. He obtained his Bachelor of Science from Presidency University and Master of Science from University of Calcutta respectively. He received his Doctor of Philosophy degree from the University of Mumbai and subsequently a postdoctoral fellowship from Columbia University in 1973. His postdoctoral work was with Prof. J.W Flynn in the area of chemical dynamics using high-resolution semiconductor diode lasers. His siblings include the noted physicist professor of University of Calcutta, Prof. Samir K Sarkar, the noted solid-state physicist of Presidency University, Prof. Salil K. Sarkar and his nephew is the internationally published poet and microelectronics engineer, Sreyash Sarkar. Sarkar joined the Multidisciplinary Research Scheme (MDRS) of Bhabha Atomic Research Center, Mumbai in 1974 and started working as an A-grade scientist and in 2000 started heading the Radiation & Photochemistry Division. He has been heading several high-end projects of BARC such as the Laser Isotope Separation programme of the Department of Atomic Energy at its very onset. He was president of the Society of Materials Chemistry of BARC from 2013 to 2014. Sarkar has also been the Vice President of ISRAPS (Indian Society for Radiation and Photochemical Sciences) and Indian Laser Association (ILA) from 2009 to 2012 and has been inducted as an executive member into the Maharashtra Academy of Sciences since 2005. Sarkar was one of the founding members of Indian Association of Nuclear Chemists and Allied Scientists(IANCAS). He has worked extensively as visiting scientists at the P.N.Lebedev Physical Institute & Institute of Spectroscopy, Russia, Kyoto Institute of Technology, Japan, Institute of Chemical Process Fundamentals, Czech Republic, Paris-Sud University, France and the Heidelberg University, Germany with various laser systems including Free Electron Lasers. Sarkar currently serves as a senior professor at Homi Bhabha National Institute.

Research Sarkar's research interests focused on radiation & photochemistry with lasers and accelerators, chemical dynamics, spectroscopy and laser development. He is the author or co-author of more than 350 journal articles, as well as 16 books and, 32 book chapters. During his tenure as head of the Radiation & Photochemistry Division at BARC, he launched the Molecular Laser Isotope Separation (MLIS) programme with the aid of Department of Atomic Energy in close collaboration with the International Nuclear Information System(INIS). The idea was to use the intense, monochromatic light of lasers to break the chemical bonds of only those molecules containing the fissionable isotope uranium-235. At present the programme is evolving around the separation of low and middle mass isotopes, namely sulphur 34/33/32, oxygen 17/18, carbon 13/12, hydrogen T/D/H to be followed by an advanced engineering programme designed to lead to a demonstration plant. The latest results have come very close to the design parameters specified for a full-scale separation of carbon isotopes. His research spans from understanding quantum state-resolved study in molecular chemistry to the operation of optically pumped molecular lasers to its varied applications in photochemistry and also the isotope selective IR multiphoton dissociation in laser waveguide reactors. His work in radiochemistry addresses the radical chemistry of glucosamine naphthalene acetic acid and naphthalene acetic acids. His extensive work on Raman Spectroscopy addresses the process of how ions affect the structure of water. In 2010, Sarkar was chosen as the Savitribai Phule Pune University Distinguished Lecturer in Photochemistry.

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Worked examples

Example 1 — a first encounter with Sisir Kumar Sarkar

Start with the simplest possible case. Write down what Sisir Kumar Sarkar claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sisir Kumar Sarkar before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sisir Kumar Sarkar ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sisir Kumar Sarkar

In research: Sisir Kumar Sarkar appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sisir Kumar Sarkar in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sisir Kumar Sarkar is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1953 births, 20th-century Indian chemists, 21st-century Indian chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Sisir Kumar Sarkar outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Sisir Kumar Sarkar in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sisir Kumar Sarkar means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Sisir Kumar Sarkar out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sisir Kumar Sarkar in simple terms?

Why does Sisir Kumar Sarkar matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sisir Kumar Sarkar?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sisir Kumar Sarkar.