J. K. Meena

ORCID: 0000-0003-4912-9609
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About
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Research Areas
  • Nuclear physics research studies
  • Nuclear Physics and Applications
  • Atomic and Molecular Physics
  • Astronomical and nuclear sciences
  • Quantum Chromodynamics and Particle Interactions
  • Nuclear reactor physics and engineering
  • Radiation Detection and Scintillator Technologies
  • Advanced Chemical Physics Studies
  • Atomic and Subatomic Physics Research
  • COVID-19 and healthcare impacts
  • Global Maternal and Child Health
  • Innovations in Medical Education
  • Child Nutrition and Water Access
  • Airway Management and Intubation Techniques
  • Radiation Therapy and Dosimetry
  • Pulsars and Gravitational Waves Research
  • Climate Change and Health Impacts
  • Head and Neck Cancer Studies
  • COVID-19 epidemiological studies
  • Global Cancer Incidence and Screening
  • High-Energy Particle Collisions Research
  • Occupational Health and Performance
  • Particle accelerators and beam dynamics
  • Global Public Health Policies and Epidemiology
  • Innovative Teaching Methods

All India Institute of Medical Sciences
2020-2025

Variable Energy Cyclotron Centre
2014-2024

Cancer Institute (WIA)
2020-2024

Saveetha University
2024

All India Institute of Medical Sciences Jodhpur
2016-2023

Professor Jayashankar Telangana State Agricultural University
2023

Vardhman Mahavir Medical College & Safdarjung Hospital
2023

All India Institute of Medical Sciences Bhopal
2020-2022

Delhi Technological University
2022

All India Institute of Medical Sciences Raipur
2020-2022

A high-statistics, high-resolution, complete kinematical measurement has been performed to estimate the quantitative contributions of various direct 3$\ensuremath{\alpha}$ decay mechanisms in famous Hoyle state, ${0}_{2}^{+}$ resonant excited state ${}^{12}$C at an excitation energy 7.654 MeV, using inelastic scattering 60-MeV $\ensuremath{\alpha}$ particles on ${}^{12}$C. The present observation nonzero branching ratios modes, which have extracted...

10.1103/physrevc.88.021601 article EN Physical Review C 2013-08-14

Precise estimation of the rare direct 3α decay Hoyle state 12C has been made to unveil its unusual α-cluster configurations ranging from linear chain structure diffuse Bose gas as well Einstein condensate. The present new high precision, nearly zero background experimental study with 1.6×105 events converged on upper limit for at ∼0.019% 95% confidence limit, which is more than a factor 2 lower obtained in previous studies.

10.1016/j.physletb.2019.04.028 article EN cc-by Physics Letters B 2019-04-17

<title>Abstract</title> Background Urinary biomarkers such as neutrophil gelatinase-associated lipocalin (NGAL) and Renalase hold promise for assessing kidney health, yet their role in the pediatric neurogenic bladder (NB) remains unclear. This study evaluates clinical utility detecting dysfunction association with disease severity. Methods A cross-sectional included 44 NB patients 45 age- gender-matched healthy children (reference group). NGAL levels were measured using ELISA. categorized...

10.21203/rs.3.rs-5998098/v1 preprint EN cc-by Research Square (Research Square) 2025-03-27

The High-spin states in 195Tl, populated through the 185,187Re(13C, xn) fusion evaporation reaction at beam energy of 75 MeV, were studied using Indian National Gamma Array (INGA). More than 50 new γ transitions have been placed proposed level scheme which is extended up to excitation ≈ 5.6 MeV and spin=22.5ħ. Two pairs degenerate bands based on two different quasi-particle configurations identified this nucleus indicating first observation such an odd-A A∼190 region signify evidence...

10.1016/j.physletb.2018.06.033 article EN cc-by Physics Letters B 2018-06-19

Background . In developing countries, women are at high risk for several reproductive health problems especially RTI/STIs. Since all RTIs/ STIs preventable and most of them curable, it is pertinent to study the determinants seeking behaviour. Objectives To compare prevalence treatment behaviour about RTI/STI symptoms among married age group (18–45 years) living in urban rural area Delhi. Methods A cross-sectional was done residing Pooth Khurd, a village North West district Delhi, Delhi Gate,...

10.1155/2015/563031 article EN International Journal of Reproductive Medicine 2015-01-01

Context . Men play a significant role in all spheres of domestic life including reproduction. Youth is period critical development and ignoring sexual reproductive health (SRH) needs young men ought to have wider social consequences. Aims Objectives To assess the knowledge, attitude, perceptions regarding SRH among unmarried (18–25 years). Settings Design A semiqualitative study conducted across four centers (2 rural, 2 urban) Delhi. Materials Methods Focus group discussions (FGDs) were held...

10.1155/2015/431460 article EN cc-by International Journal of Reproductive Medicine 2015-01-01

Neutron evaporation energy spectra have been measured in coincidence with $\ensuremath{\gamma}$ rays of different multiplicities for ${}^{119}$Sb${}^{*}$ the excitation range $\ensuremath{\sim}31$--43 MeV. The inverse level density parameter ($k$) extracted angular momentum regions corresponding to $\ensuremath{\gamma}$-ray by comparing experimental neutron statistical model prediction. It has observed that increases increase momentum. Possible reasons this variation discussed.

10.1103/physrevc.85.064310 article EN Physical Review C 2012-06-11

Mass distribution of fission fragments and neutron multiplicity in the ${}^{16}\text{O}+{}^{238}$U reaction were measured at near- below-barrier energies. A sudden change fragment mass width, observed present measurement, confirmed transition to quasifission energies; same was indicated earlier from study angular anisotropy. However, measurement prescission as well evaporation residue yield did not indicate any significant departure respective statistical model predictions throughout energy...

10.1103/physrevc.83.024605 article EN Physical Review C 2011-02-09

Neutron evaporation spectra at backward angles from ${}^{201}$Tl${}^{*}$, ${}^{185}$Re${}^{*}$, and ${}^{169}$Tm${}^{*}$ compound nuclei, having different ground-state deformations, have been measured two excitation energies (${E}^{*}$ $\ensuremath{\sim}$ 37 26 MeV). The values of the inverse level density parameter ($k$), extracted these excitations using statistical model calculations, are observed to decrease substantially lower energy ($\ensuremath{\sim}$26 MeV) for nuclei large...

10.1103/physrevc.88.031601 article EN Physical Review C 2013-09-16

Constraining the excitation energy at which nuclear shell effect washes out has important implications on production of superheavy elements and many other fields physics research. We report fission fragment mass distribution in $\ensuremath{\alpha}$ induced reaction an actinide target for wide range close interval show direct evidence that $\ensuremath{\sim}40$ MeV. The calculation shows second peak barrier also vanishes around similar energy.

10.1103/physrevc.91.044620 article EN Physical Review C 2015-04-30

Neutron evaporation spectra have been measured from $^{4}\mathrm{He}+^{208}\mathrm{Pb}$ and $^{4}\mathrm{He}+^{209}\mathrm{Bi}$ reactions by using $^{4}\mathrm{He}$-ion beams of several bombarding energies. Excitation-energy dependence the level density parameter has studied for two systems in excitation energy range $\ensuremath{\sim}18$--50 MeV. For both an overall reduction asymptotic with increasing (temperature) is observed. The trend data was compared Thomas--Fermi model predictions...

10.1103/physrevc.94.064607 article EN Physical review. C 2016-12-12

Fission fragment mass distributions have been measured from the decay of compound nucleus $^{246}\mathrm{Bk}$ that has populated via two entrance channels. These channels a slight difference in their asymmetries puts them on either side Businaro Gallone asymmetry parameter. Both target nuclei were deformed. Near Coulomb barrier, at similar excitation energies, width fission distribution was found to be drastically different for $^{14}\mathrm{N}+^{232}\mathrm{Th}$ reaction compared...

10.1103/physrevc.79.054607 article EN Physical Review C 2009-05-08

Light particle ($n$, $p$, and $\ensuremath{\alpha}$) evaporation spectra have been measured in coincidence with $\ensuremath{\gamma}$ rays of different multiplicities, emitted from ${}^{97}$Tc${}^{*}$ ${}^{62}$Zn${}^{*}$ compound systems at the excitation energies $\ensuremath{\sim}36$ MeV. Statistical model analysis experimental data carried out to extract value inverse level density parameter ($k$) angular momentum regions, corresponding multiplicity. A systematic trend a decrease increase...

10.1103/physrevc.86.044622 article EN Physical Review C 2012-10-22
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