Useful Links

Research Interest:

Theoretical atomic physics. Inner-shell ionization and energy loss of charged particles in matter. Development and improvement of the ECPSSR theory of K-, L-, and M-shell ionization that is widely used for comparison with x-ray and Auger-electron production cross sections; in particular in PIXE analysis.  Since 2017, a member of the International Honorary Committee for PIXE conferences.

Dr. Gregory Lapicki

Dr. Greg Lapicki
  • Professor
  • Ph. D., New York University, 1975
  • Office Location: Howell E308
  • Office Hours: Monday 9:30-12:00 am &
    Friday 10:30-12:00 and 2:00-3:00 pm   

Any other time by appointment
(e-mail 24 hrs in advance when you wish to come by )


(Over 100 articles). In this millennium:

S. Kumar, U. Singh, M. Oswal, G. Singh, N. Singh, D. Mitra, T. Nandi, G. Lapicki, "L shell x-ray production in high-Z elements using 4-6 MeV/u fluorine ions", Nucl. Instr. Meth. B 395 39-51 (2017).

J. Miranda and G. Lapicki, "Experimental cross sections for L-shell x-ray production and ionization by protons", At. Data Nucl. Data Tables 100, 651-780 (2014).

Ž. Šmit and G. Lapicki, "Energy loss in the ECPSSR theory and it's calculation with exact integration limits", J. Phys. B 47, 055203-055210 (2014).

G. Lapicki, "Werner Brandt legacy to PIXE: Past and present perspectives", Nucl.Instr. Meth. B 318, 6-10 (2014).

D.D. Cohen, E. Stelcer, J. Crawford, A. Atanacio, G. Doherty, G. Lapicki, "Comparison of proton and helium induced M subshell X-ray production cross sections with the ECUSAR theory", Nucl.Instr. Meth. B 318, 11-14 (2014).

L.C. Phinney, G. Lapicki, D.L. Weathers, F.U. Naab, J.L. Duggan, and F.D. McDaniel "Thorium and uranium M-shell x-ray production cross sections by 4.5-11.3 MeV carbon ion and 4.5-13.5 MeV oxygen ion bombardment", J.Phys. B 45, 035205-035213 (2012).

G. Lapicki and J. Miranda, " Updated database for L x-ray production by protons and extraction of L-subshell ionization cross sections from only L γ and L α + L β cross sections" , X-Ray Spectrometry 40, 122-126 (2011).

D. Mitra, M. Sarkar, D. Bhattacharya, S. Santra, A. C. Mandal, G. Lapicki, "Lower and upper bounds on M-shell X-ray production cross sections by heavy ions.", Nucl. Instr. Meth. B 268 450-459 (2010).

G. Lapicki, "Evaluation of cross sections for Lα x-ray production by up to 4 MeV protons in representative elements from silver to uranium", J. Phys. B 42 , 145204-145214. (2009).

L.C. Phinney, J.L. Duggan, G. Lapicki, F.U. Nabb, K. Hossain, and F.D. McDaniel, "Thorium and uranium M-shell x-ray production by 0.4-4.0 Mev protons and 0.4-6.0 Mev helium ions", J.Phys. B42, 085202-085210 (2009).

M. Czarnota, D. Banaś, J. Braziewicz, J. Semaniak, M. Pajek, M. Jaskóła, A. Korman, D. Trautmann, W. Kretschmer, G. Lapicki, and T. Mukoyama, "X-ray study of M-shell ionization of heavy atoms by 8.0-35.2 Mev Oq+ ions: The role of multiple-ionization effects", Phys.Rev.A 79,032710-032724 (2009).

G. Lapicki, "Scaling of analytical cross sections for K-shell ionization by nonrelativistic protons to cross sections by protons at relativistic velocities",J. Phys. B41,115201-115213 (2008).

I. Fijał-Kirejczyk, M. Jaskóła, A. Korman, D. Banaś, J. Braziewicz, J. Choiński, U. Majewska, M. Pajek, W. Kretschmer, G. Lapicki, T.Mukoyama and D. Trautmann, "L-sub shell ionization of heavy elements by S ions with energy of 0.4-3.8 MeV/amu". Nucl.Instr. Meth. B.266, 2255-2258 (2008).

I. Fijał-Kirejczyk, M.Jaskóła, W. Czarnacki, A. Korman, D. Banaś, J. Braziewicz, U. Majewska, J. Semaniak, M. Pajek, W. Kretschmer, T. Mukoyama, D. Trautmann and G. Lapicki, "Coupling and binding-saturation effects in L-sub shell ionization of heavy atoms by 0.3-1.3-MeV/amu Si ions", Phys. Rev. A77, 032706-032721(2008).

G. Lapicki, " Ionization probability for multiple ionization: An assessment of the geometrical model".Rad. Phys. Chem. 76, 475-482 (2007).

M. Pajek, D. Banaś, J. Braziewicz, M. Czarnota, A. Bieńkowski, M. Jaskóła, A. Korman, D. Trautmann and G. Lapicki, " M-shell ionization of heavy elements by 0.1-1.0 MeV/amu1,2H and 3,4He ions", Phys. Rev. A73, 012709- 012725 (2006).

A. Kumar, D. Misra, A.H. Kelkar, U. Kadhane, Y.P. Singh, G. Lapicki, L. Gulyas and L.C. Tribedi, "Saturation effect in projectile- and target- x-ray production in collisions between 2.5 MeV/amu highly charged Cu ions and gaseous targets", J. Phys. B39, 331-341 (2006).

G. Lapicki, "Testing the ECPSSR theory and its modifications with ratios of antiproton-to-proton ionization cross sections", Nucl. Instr. Meth. B241, 34-42 (2005).

R. Mehta, N.K. Puri, Ajay Kumar, A. Kumar, B.P. Mohanty, P. Balouria, I.M. Govil, M.L. Garg, T. Nandi, A. Ahamad and G. Lapicki, "L x-ray production in 57La, 58Ce, 60Nd and 62Sm by 35-60 MeV carbon and oxygen ions", Nucl. Instr. Meth. B241, 63-68 (2005).

F. Naab, J.L. Duggan, O.W. Holland, F.D. McDaniel and G. Lapicki, "Measurements and calculations of M-shell X-ray production in Er, Yb and Lu by 0.75-6 MeV He ions", Nucl. Instr. Meth. B241, 94-100 (2005).

G. Lapicki, A.C. Mandal, S. Santra, D. Mitra, M. Sarkar, D. Bhattacharya, P. Sen, L. Sarkadi and D. Trautmann, "L-subshell ionization of Ce, Nd, and Lu by 4-10-MeV C ions" Phys. Rev. A72, 022729-022745 (2005).

G. Lapicki, "The status of theoretical K-shell ionization cross sections by protons" , X-Ray Spectrometry 34, 269-278 (2005).

G. Lapicki, G.A.V.R. Murty, G.J.N. Raju, B.S. Reddy, S.B. Reddy and V. Vijayan, "Effects of multiple ionization and intrashell coupling in L-subshell ionization by heavy ions", Phys. Rev. A70, 062718-062731 (2004).

M. Pajek, D. Banaś, J. Semaniak, J. Braziewicz, U. Majewska, S. Chojnacki, T.Czyżewski, I. Fijał, M. Jaskóła, A. Glombik, W. Kretschmer, D. Trautmann, G. Lapicki and T. Mukoyama, "Multiple ionization and coupling effects in L-subshell ionization of heavy atoms by oxygen ions", Phys. Rev. A68, 022705-022722 (2003).

G. Lapicki, "The status of theoretical L-subshell ionization cross sections for protons", Nucl. Instr. Meth. B189, 8-20 (2002).

D. Mitra, A.C. Mandal, M. Sarkar, D. Bhattacharya, P. Sen and G. Lapicki, "M x-ray production cross sections of gold and lead by 4 to 12 MeV carbon ions", Nucl. Instr. Meth. B183, 171-177 (2001).

M. Jaskóła, T.Czyżewski, L. Głowacka, D. Banaś, M. Pajek, W. Kretschmer, G. Lapicki and D. Trautmann, "M-x-ray production cross sections for 0.2-2 Mev deuterons", Nucl. Instr. Meth. B161, 191-195 (2000).