NSR Query Results

Output year order : Descending
Format : Normal

NSR database version of May 10, 2024.

Search: Author = T.K.Umesh

Found 14 matches.

Back to query form

2011SH18      Phys.Atomic Nuclei 74, 675 (2011)

G.Shivakumara swamy, T.K.Umesh

Cluster radioactivity of ^128-134Gd isotopes

RADIOACTIVITY ^{128,130,132,134}Gd(α), (⁸Be), (¹²C), (¹⁶O), (²⁰Ne), (²⁴Mg), (²⁸Si); calculated T_1/2, decay constant, penetrability.

doi: 10.1134/S1063778811050218
Citations: PlumX Metrics

2011SH35      Int.J.Mod.Phys. E20, 2167 (2011)

G.Shivakumara Swamy, T.K.Umesh

Half-lives of cluster decay of neutron rich nuclei in trans-tin region

RADIOACTIVITY ¹⁴⁴Ba(¹²C), ¹⁴⁶Ba(¹⁴C), ¹⁴⁸Ce(¹⁶O), ¹⁵²Ce(²⁰O), ¹⁵²Nd(²⁰Ne), ¹⁵⁶Nd(²⁰O), (²²O), (²⁴Ne), (³⁰Mg), ¹⁵⁶Sm(²⁴Mg), ¹⁶⁰Sm(²⁶Ne), (²⁸Mg), (³⁰Mg), (³²Mg), (³⁴Si), (⁴⁶Ar), ¹⁶⁰Gd(²⁸Si), ¹⁶⁴Gd(²⁶Ne), (³⁰Mg), (³²Si), (³⁴Si), (⁴⁰S), (⁴⁶Ar); calculated T_1/2. Single line of universal curve and universal decay law methods.

doi: 10.1142/S021830131102023X
Citations: PlumX Metrics

2004MB15      Nucl.Instrum.Methods Phys.Res. B215, 4 (2004)

M.L.Mallikarjuna, S.B.Appaji Gowda, K.E.Ganesh, R.Gowda, T.K.Umesh

A method to determine the K-shell photoeffect cross sections of some rare earth elements

NUCLEAR REACTIONS La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Er(γ, E), E<84.3 keV; measured reaction products; deduced K-shell photoeffect σ.

doi: 10.1016/s0168-583x(03)01717-8
Citations: PlumX Metrics

1998AN38      Radiat.Phys.Chem. 51, 363 (1998)

S.J.Anasuya, T.K.Umesh, R.Gowda

Photoeffect cross sections of some rare earth elements for 661.6 keV gamma rays by a new method

NUCLEAR REACTIONS Ce, Pr, Nd, Gd, Dy(γ, X), E=661.6 keV; measured reaction products; deduced σ. Comparison with available data.

doi: 10.1016/s0969-806x(97)00139-4
Citations: PlumX Metrics

1997SA73      Pramana 48, 1077 (1997)

Sandiago, T.K.Umesh, R.Gowda

Photon interaction cross-sections and anomalous scattering factors of Cu and Ag

NUCLEAR REACTIONS Cu, Ag(γ, X), E=5-85 keV; measured reaction products; deduced total attenuation σ, photoeffect σ. Comparison with Scofield theoretical values.

doi: 10.1007/bf02847465
Citations: PlumX Metrics

1995GO38      Nucl.Instrum.Methods Phys.Res. B95, 127 (1995)

C.Gowda, T.K.Umesh, R.Gowda

A Simple Method to Measure the Total Coherent Scattering Cross Sections of Elements

NUCLEAR REACTIONS ²⁰⁹Bi, Pb, W, Ba(γ, γ), E=661.6 keV; measured total coherent scattering σ. Well-type NaI(Tl) detector.

doi: 10.1016/0168-583X(94)00335-1
Citations: PlumX Metrics

1994AN15      Nucl.Instrum.Methods Phys.Res. B84, 421 (1994)

S.J.Anasuya, T.K.Umesh, R.Gowda

A New Method to Determine the Atomic Photo Effect Cross Section in Lead at 661.6 KeV

ATOMIC PHYSICS Pb(γ, e), E=661.6 keV; measured photo effect σ. Elemental Pb, PbO, PbSO₄, Pb(NO₃)₂ targets. Model comparison.

doi: 10.1016/0168-583X(94)95336-8
Citations: PlumX Metrics

1994KU39      Nucl.Instrum.Methods Phys.Res. B84, 291 (1994)

J.S.Kumari, T.K.Umesh, R.Gowda

A New Method to Determine Whole-Atom Integral Incoherent Scattering Cross Sections of Elements

ATOMIC PHYSICS Pb, Ba, Cr, O(γ, γ), E=661.6 keV; measured incoherent whole atom scattering σ. Well-type NaI(Tl) detector, simple oxide total attenuation σ measuring technique.

doi: 10.1016/0168-583X(94)95718-5
Citations: PlumX Metrics

1994KU44      Phys.Rev. A50, 1265 (1994)

J.S.Kumari, T.K.Umesh, R.Gowda

Whole-Atom Integral Incoherent Scattering Cross Sections of Elements Na, Cl, K, Cu, Br, Rb, Ag, Cd, I, and Hg at 661.6 keV

ATOMIC PHYSICS Na, Cl, K, Cu, Br, Rb, Ag, Cd, I, Hg; analyzed data; deduced whole atom integral incoherent scattering σ. Attenuation σ from halides input.

doi: 10.1103/PhysRevA.50.1265
Citations: PlumX Metrics

1985RA13      Nucl.Sci.Eng. 90, 99 (1985)

C.Ranganathaiah, T.K.Umesh, B.Sanjeevaiah

Semiempirical Formulas for the K-Shell Photoionization Cross Sections for Gamma Rays in the 150- to 1300-keV Energy Range

ATOMIC PHYSICS Z=29-90; analyzed data; deduced K-shell photoionization. Semi-empirical formulas.

doi: 10.13182/NSE85-A17434
Citations: PlumX Metrics

1985UM02      Phys.Rev. A32, 959 (1985)

T.K.Umesh, C.Ranganathaiah, B.Sanjeevaiah

Photoeffect Cross Sections of Some Rare-Earth Elements at 145.4 keV

ATOMIC PHYSICS La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Er(γ, e), E=145.4 keV; measured attenuation σ; deduced photoeffect σ.

doi: 10.1103/PhysRevA.32.959
Citations: PlumX Metrics

1984UM01      Phys.Rev. A29, 387 (1984)

T.K.Umesh, C.Ranganathaiah, B.Sanjeevaiah

Incoherent-Scattering Cross Sections of ⁶⁰Co γ Rays in Elements

ATOMIC PHYSICS H, Li, C, N, O, F, Na, Mg, Al, P, S, Cl, K, Ti, Cr, Mn, Ni, Cu, Br, Rb, Sr, Zr, Ag, Cd, I, Ba, La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Er, Ta, Pb, Bi(γ, γ'), E=1170, 1330 keV; measured total attenuation σ; deduced whole atom integral θ. Transmission measurements, ⁶⁰Co source.

doi: 10.1103/PhysRevA.29.387
Citations: PlumX Metrics

1984UM06      Nucl.Instrum.Methods Phys.Res. B5, 472 (1984)

T.K.Umesh, C.Ranganathaiah

A simple method of determining the photoeffect cross sections of elements for gamma rays

NUCLEAR REACTIONS Ag, I, Ba, La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Er, Ta, Pb, Bi(γ, X), E=0.514-1.33 MeV; measured reaction products; deduced σ.

doi: 10.1016/0168-583x(84)90003-x
Citations: PlumX Metrics

1983UM01      Nucl.Sci.Eng. 85, 426 (1983)

T.K.Umesh, C.Ranganathaiah, B.Sanjeevaiah

A Simple Semi-Empirical Formula for the Incoherent Scattering Cross Sections for Gamma Rays in the 300- to 1250-keV Energy Region

ATOMIC PHYSICS H, F, K, Cu, Zr, I, Sm, Ta, Bi(γ, γ), E=300-1250 keV; analyzed incoherent scattering σ(E); deduced whole atom integral incoherent σ semi-empirical formula.

doi: 10.13182/NSE83-A18389
Citations: PlumX Metrics