Dr. Bipin B. Dhal

Who am I?

I am an APDA(ARC) postdoctoral research fellow in the X-ray Optics Research Group, School of Physics. To contact me, I'm at:

Optics Research Group
School of Physics (Room 103)
University of Melbourne
Victoria, 3010
AUSTRALIA

Phone: +61 (0)3 8344 9896 (Office)
       +61 (0)3 8344 0015 (The Lab)
Fax:   +61 (0)3 9347 4783
URL:   http://optics.ph.unimelb.edu.au/~bipin
email: dhal@optics.ph.unimelb.edu.au

Support on idl

Upcoming conferences

Atomic and Molecular Physics & Quantum Chemistry meeting of the 14th AIP Congress, Adelaide, South Australia, 10-15 December 2000. "Competitive channel of double electron transfer in heavy Ion-Atom Collision."
Australian Optical Society (AOS 2000), Adelaide, December 2000, " Absolute measurements of EXAFS for copper and gold"

Research

Postdoctoral

"High-precision Measurements of Fundamental Interactions in Atomic Physics, resolving ten standard deviation discrepancies in critical energy regiemes for major elements".

Experiments are carried out at Australian National Beam L ine (ANBF) Facility, KEK Japan and THE ADVANCED PHOTON SOURCE (APS)
The project is supported by the Australian Research Council(ARC).

PhD research

Title: "Subshell ionization studies by photons and heavy charged particles".

Recent and past conferences

There have been accesses to this page.

Optics group

School of Physics

Updated: 31 July 2000
Maintainer: David Paterson, School of Physics, Email: dhal@optics.ph.unimelb.edu.au
Authorised by: Chris Chantler, School of Physics, Email: chantler@optics.ph.unimelb.edu.au
This page, its contents and style, are the responsibility of the author and do not represent the views, policies or opinions of The University of Melbourne.

Research papers

List of Publication (In Journals)

1. Single K-K electron transfer and K-ionization cross-sections in collisions of highly charged C, O, F, S, Cl ions with Ar and Kr. B. B. Dhal, Lokesh C. Tribedi, U. Tiwari, P. N. Tandon, T. G. Lee, C. D. Lin and L. Gulyas, Phys. Rev. A 62, 22714-1— 022714-9(2000).

2. Strong double K-K transfer channel in near symmetric collision of Si+Ar at intermediate velocity range. B. B. Dhal, Lokesh C. Tribedi, U. Tiwari, P. N. Tandon, T. G. Lee, C. D. Lin and L. Gulyas, J. Phys B33., 1069-1079(2000).

3. L-subshell ionisation studi es of Ta, W and Pt with protons, V. John Kennedy, A. Augusthy, K. M. Varier, P. Magudapathy, K. G. M. Nair, B. B. Dhal and H. C. Padhi, Nucl. Instrum Methods in Physics Research B161-163, 196-201(2000).

4. Simultaneous L- and M-shell ionization of a 80Se target deduced from the analysis of energy shifts and relative intensities of K x-ray line induced by various projectiles. M. Polasik, S. Raj, B. B. Dhal, H.C. Padhi, A. K. Saha, M. B. Kurup, K. G. Prasad and P. N. Tandon. J. Phys B32, 3711-3725 (1999)

5. Subshell Resolved L-K Electron Transfer and Ionization of Yb with Si Ion ipmact. A. K. Saha, L.C.Tribedi, B. B. Dhal, U.Tiwari and P. N. Tandon. Physica Scripta T80 391-392,(1999).

6. Saturation in the K-shell Excitation of 120 MeV S 14+ Ions in Interaction with Gas Targets U.Tiwari, A.K.Saha, B. B. Dhal, L. C.Tribedi, M. B. Kurup, P. N. Tandon and L. Gulyas. Physica Scripta T80 393-395(1999).

7. Subshell- resolved L-K electron transfer and ionization cross-sections for Au by bare and H-like sulpher ions. B. B. Dhal, A. K. Saha. Lokesh C. Tribedi, K. G. Prasad and P. N. Tandon, J. Phys B31(letter) L807-L816 (1998).

8. Study of x-ray and L-REC photon emissions from highly ionized swift 75As and 80Se projectiles passing through a thin carbon foil. B. B. Dhal, H.C.Padhi, K.G.Prasad, P. N. Tandon, M. Polasik, J. Physics B31, 1225-1236(1998).

9. Evidence in favour of no appreciable Cu(3d)-O(2p) hybridization in undoped and Zn doped YBCO superconductors. S. Raj, B. B. Dhal, H. C. Padhi, D. Behera, N. C. Mishra. Solid State Communication 105(12), 767-771 (1998).

10. Influence of solid-state effects on the Ka-to-Kb x-ray intensity ratios of Ni and Cu in various silicide compounds, S. Raj, B. B. Dhal, H. C. Padhi and M. Polasik, Phys. Rev. B58(14), 9025(1998).

11. L x-ray production cross-sections and their ratios in Ta, W and Pt for proton impact in the energy range 2.0 5.2 MeV. V. John Kennedy, A. Augusthy, K. M. Varier, P. Magudapathy, K.G. M. Nair, B. B. Dhal and H. C. Padhi, Nuc l. Instrum and Meth. In Phys. Res. B134, 165-173(1998)

12. Periodic variation in the I and Ag-projectile Lb1-to-La x-ray intensity ratio with the target atomic number. Amal K. Saha, B. B. Dhal, U. Tiwari, M. B. Kurup, H. C. Padhi, K. G. Prasad and P. N. Tandon, Phys. Rev. A57(6), 4413(1998).

13. L x-ray from 64 MeV iodine projectiles in collision with various gas targets. Amal K. Saha, B. B. Dhal, K. V. Thulsi Ram, H. C. Padhi, M. B, Kurup, K. G. Prasad and P. N. Tandon. J. Phys. B31, 1771-1779(1998).

14. X-ray Emission Studies from Highly Ionized Swift Projectiles Passing through Thin Carbon Foils. B. B. Dhal, H. C. Padhi, K. G. Prasad, P. N. Tandon and and M. Polasik. Physica Scripta T73, 230-232 (1997).

15. A strange projectile dependence of L2- subshell ionization cross-section of Au for 28Si and 32S ion bombardment, B. B. Dhal, H. C. Padhi, D. Trautmann, Nucl. Instrum and Meth. In Phys. Res. B117, 218-220(1996).

16. Measurement of L X-ray intensity ratios in tantalum by proton and Si ion impact, J. S. Braich, D. P. Goyal, A. Mandal, B. B. Dhal, B. P. Singh, H. C. Padhi, C. S. Khurana and H. R. Verma, Nucl. Instrum and Meth. In Phys. Res. B111, 22-26(1996).

17. L-subshell ionization studies in Au and Bi for 19F and 28Si ion bombardment, H. C. Padhi, B. B. Dhal, V. Nanal, K. G. Prasad, P. N. Tandon and D. Trautmann, Phys. Rev. A54(4), 3014(1996).

18. Measurement of M X- ray production cross-sections in gold by proton, oxygen and nickel ion impact, J. S. Braich, P. Verma, D. P. Goyal, A. Mandal, B. B. Dhal, H. C. Padhi and H. R. Verma, Nucl. Instrum and Meth. In Phys. Res. B119, 317-324(1995).

19. L-subshell ionization studies in Ta, Au and Pb excited by 59.54 keV g-rays, B. B. Dhal and H. C. Padhi, , Nucl. Instrum and Meth. In Phys. Res. B103, 401-406(1995).

20. Kb /Ka X-ray intensity Ratios of Fe, Co, Ni, Cu, Mo, Ru, Rh and Pd in equiatomic aluminides. H. C. Padhi and B. B. Dhal, Solid State Communication 96(3), 171-173(1995).

21. Experimental evidence i n favour of Stark mixing of atomic L-subshell states in the boron impact of Au and Bi, H. C. Padhi, B. B. Dhal, T. Nandi and D. Trautmann, J.Phys(Letter) 28, L59-L62(1995).

22. L-subshell ionization studies od Au for a-particle and lithium-ion bombardment, B. B. Dhal, T. Nandi, H. C. Padhi and D. Trautmann, J. Phys. B28, 3559-3567(1995).

23. L-subshell ionization studies od Au for a-particle and lithium-ion bombardment, B. B. Dhal, T. Nandi and H. C. Padhi , Nucl. Instrum and Meth. In Phys. Res. B101, 327-334 (1995).

24. Relative K x-ray intensities in some selected elements between Mn and Sb following ionization by 59.54-keV g rays, B. B. Dhal and H. C. Padhi, Phys. Rev. A50, 1096(1994).

25. Relative L-shell X-ray intensities of Pt, Pb and Bi following ionization by 59.54 keV g rays, B. B. Dhal and H. C. Padhi, Nucl. Instrum and Meth. In Phys. Res. B94, 373-376 (1994).

26. L-shell ionization studies of Pb abd Bi with a particles, B. B. Dhal, T. Nandi and H. C. Padhi, Phys. Rev. A49, 329(1994).

27. Study of L x-ray production cross sections by proton bombardment of Pb and Bi, H. C. Padhi, C. R. Bhuinya, B. B. Dhal and S. Misra, J. Phys. B27, 1105-1114(1994).

28. Energy dependence of multivacancy formation in copper following excitation by fast protons, H. C. Padhi, C. R. Bhuinya and B. B. Dhal, Physics Letters A173, 73-77(1993).

29. Influence of solid-state effects on the Kb/Ka intensity ratios of Ti and v in TiB2, VB2 and VN, H.C. Padhi, C. R. Bhuinya and B. B. Dhal, J. Phys B26, 4465-4469(1993)

Publications in Conferences/Symposia

1. Double and single K-K transfer and subshell resolved L-K electron transfer cross-sections in ion-atom collision, B. B. Dhal, L. C. Tribedi, A. K. Saha, U. Tiwari, P. N. Tandon, T. Lee and C. D. Lin, p546, ICPEAC XXI(Sendai, Japan), 22-27 July, 1999.

2. K-shell excitation of highly charged Cl ions in collision with neutral gas atoms at intermediate velocities, U. Tiwari, B. B. Dhal, L . C. Tribedi, M. B. Kurup, P. N. Tandon, and L. Gulyas, p508, ICPEAC XXI(Sendai, Japan), 22-27 July, 1999.

3. Inner-shell electron transfer (K-K, L-K) and excitation studies in energetic ion atom collision, 5th International conference on application of accelerator in research and industry, Nov 4-7,1998, University of North Texas-762003, B. B. Dhal, L. C. Tribedi, U.Tiwari, A. K. Saha, K. V. Thulsiram, M. B. Kurup, P. N. Tandon, L. Gulyas, Teck Lee and C. D. Lin (Abstract) (1998)

4. Anomalies in target and projectile L-subshell intensity ratios observed in heavy ion-atom collision, XI National Conference on atomic and molecular Physics, Dec 29-31, 1996 IIT-Madras, Chennai, B. B. Dhal, H. C. Padhi, A. K. Saha, M. B. Kurup, K. G. Prasad and P. N. Tandon, p129(1996).

5. X-ray emission studies of valency electron structure of some 3d and 4d metals in equiatomic aluminides, Condensed Matter Days-1995,August 29-31, Institute of Physics, Bhubaneswar-753005, H. C. Padhi and B. B. Dhal, GO2, p29(1995).

6. Breakdown of projectile Z2 scaling in Coloumb-ionization theory for heavy charged particles below 1 MeV/amu. National Workshop on Atomic Physics with high energy heavy ions, April 18-20, BHU, Varanasi-221005, India, B. B. Dhal, T. Nandi and H. C. Padhi, CP6, p19(1994).

7. Evidence against projectile induced L-subshell vacancy rearrangement effect for a-particle ionization in Pb and Bi, DAE Symposium on Nuclear Physics, University of Calicut,India , B. B. Dhal, T. Nandi and H. C. Padhi, 36B,458(1993).

8. K-shell ionization cross-section measurements of Cr and Fe using 1-4 MeV protons, 9th National Conference on Atomic and Molecular Physics, B. B. Dhal, C. R. Bhuinya and H. C. Padhi, Dec 14-18, 1992, Bhabha Atomic Research Centre, Bombay-400085,India, p93, 168(1992).

Conference/Workshops/Symposia Attended

(i) DAE Symposium on Nuclear Physics, University of Calicut, Calicut, India, December 27-30,1993.
(ii) National Workshop on Atomic Physics with high energy h eavy ions, Banarus Hindu University, Varanasi, India, April 18-20, 1994.
(iii) DAE Symposium on Nuclear Physics, Utkal University Vanivihar, Bhubaneswar, India, December 27-30,1993.
(iv) Condensed Matter Days-95, Institute of Physics, Bhubaneswar, India, August, 29-31, 1995.
(v) 100 Years of X-rays Nov. 1995, Bose Institute, calcutta, India, November 16-17, 1995.
(vi) Discussion Meeting on Atomic and Molecular Physics, Tata Institute of Fundamental Research, Mumbai, India, January 29-31, 1996.
(vii) Eighth International Conference on the Physics of Highly Charged Ions, RIKEN, Omiya, Saitama, Japan, Sept 23-26, 1996.
(viii) Sixth National Conference on X-ray Spectroscopy and Allied areas, Ratlam, India, Nov. 17th- 19th , 1997.
(ix) Conference on the "Physics of cooled and trapped atoms and ions ", Bhabha Atomic Research Centre, Mumbai, India, Feb. 5th 6th , 1998.
(x) XIII Conference on Atomic and Molecular Physics, M.L.S. University, Udaipur, Rajasthan, India, Dec 30th,1998-3rd January, 1999.

Awarda/Prizes/Scholarships/Memberships etc

(i) High School, National Merit Scholarship Award.
(ii) I. Sc, B.Sc(Hons), M. Sc, State level Merit Scholarship.
(iii) Institute of physics Scholarship(During, M. Phil and Ph. D, DAE funding at national level competition).
(iv) Visiting Fellowship, Tata Institute of Fundamental Research, India, 1997.
(v) Best Presentation, 6th National Seminar on X-ray Spectroscopy and Allied areas, Nov. 17th 19th 1997, Ratlam, India.
(vi) Young Asian Scholar, 1998, School of Physics, University of Melbourne.
(vii) Australian Post Doctoral Award (APDA), ARC, 1999.
(viii) Member, Indian Physics Association(IPA)
(ix) Member, Orissa Physical Society (OPS).
(x) Member, Samanta ChandraSekhar Amateur Association(SCAAA)
(xi) Member, Institute of Physics, alumni association.
(xii) Member, Tata Institute of Fundamental Research Alumni Association.
(xiii) Member, Melbourne University Physicist Associatio n.(MUPA)
(xiv) Member, Austalian Institute of Physics(AIP)
(xv) Member, Australian Optical Society(AOS)