Prof. Dr. Kiadtisak Saenboonruang

Applied Radiation and Isotopes, Kasetsart University, Bangkok, Krung Thep Maha Nakhon, Thailand

Prof. Dr. Kiadtisak Saenboonruang

Applied Radiation and Isotopes, Kasetsart University, Bangkok, Krung Thep Maha Nakhon, Thailand

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Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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15 March 2012 in Physical Review Letters

Journal Article

Measurement of the Neutron Radius of

{}^{208}{Pb}

through Parity Violation in Electron Scattering

S. Abrahamyan

Z. Ahmed

H. Albataineh

K. Aniol

D. S. Armstrong

PREX Collaboration

+130

We report the first measurement of the parity-violating asymmetry

A_{PV}

in the elastic scattering of polarized electrons from

{}^{208}{Pb}

A_{PV}

is sensitive to the radius of the neutron distribution (

R_{n}

). The result

A_{PV} = 0.656 \pm 0.060 (stat) \pm 0.014 (syst) ppm

corresponds to a difference between the radii of the neutron and proton distributions

R_{n} - R_{p} = {0.33}_{- 0.18}^{+ 0.16} fm

and provides the first electroweak observation of the neutron skin which is expected in a heavy, neutron-rich nucleus.

26 March 2012 in Physical Review C

Journal Article

Weak charge form factor and radius of

^{208}

Pb through parity violation in electron scattering

C. J. Horowitz

Z. Ahmed

C. -M. Jen

A. Rakhman

P. A. Souder

G. M. Urciuoli

+15

We use distorted wave electron scattering calculations to extract the weak charge form factor

F_{W} (\bar{q})

, the weak charge radius

R_{W}

, and the point neutron radius

R_{n}

^{208}

Pb from the Lead Radius Experiment (PREX) parity-violating asymmetry measurement. The form factor is the Fourier transform of the weak charge density at the average momentum transfer

\bar{q} = 0.475

^{- 1}

. We find

F_{W} (\bar{q}) = 0.204 \pm 0.028 (\exp) \pm 0.001 (model)

. We use the Helm model to infer the weak radius from

F_{W} (\bar{q})

. We find

R_{W} = 5.826 \pm 0.181 (\exp) \pm 0.027 (model) fm

. Here the experimental error includes PREX statistical and systematic errors, while the model error describes the uncertainty in

R_{W}

from uncertainties in the surface thickness

σ

of the weak charge density. The weak radius is larger than the charge radius, implying a “weak charge skin” where the surface region is relatively enriched in weak charges compared to (electromagnetic) charges. We extract the point neutron radius

R_{n} = 5.751 \pm 0.175 (\exp) \pm 0.026 (model) \pm 0.005 (strange) fm

from

R_{W}

. Here there is only a very small error (strange) from possible strange quark contributions. We find

R_{n}

to be slightly smaller than

R_{W}

because of the nucleon's size. Finally, we find a neutron skin thickness of

R_{n} - R_{p} = 0.302 \pm 0.175 (\exp) \pm 0.026

(model)

\pm

0.005 (strange) fm, where

R_{p}

is the point proton radius.

1 December 2018 in Radiation Physics and Chemistry

Journal Article

Properties of lead-free gamma-ray shielding materials from metal oxide/EPDM rubber composites

Worawat Poltabtim

Ekachai Wimolmala

Kiadtisak Saenboonruang

5 March 2012 in Physical Review Letters

Journal Article

New Precision Limit on the Strange Vector Form Factors of the Proton

Z. Ahmed

K. Allada

K. A. Aniol

D. S. Armstrong

J. Arrington

HAPPEX Collaboration

+99

The parity-violating cross-section asymmetry in the elastic scattering of polarized electrons from unpolarized protons has been measured at a four-momentum transfer squared

Q^{2} = 0.624 {GeV}^{2}

and beam energy

E_{b} = 3.48 GeV

to be

A_{PV} = - 23.80 \pm 0.78 (stat) \pm 0.36 (syst)

parts per million. This result is consistent with zero contribution of strange quarks to the combination of electric and magnetic form factors

G_{E}^{s} + 0.517 G_{M}^{s} = 0.003 \pm 0.010 (stat) \pm 0.004 (syst) \pm 0.009 (ff)

, where the third error is due to the limits of precision on the electromagnetic form factors and radiative corrections. With this measurement, the world data on strange contributions to nucleon form factors are seen to be consistent with zero and not more than a few percent of the proton form factors.

10 November 2017 in Nature Communications

Journal Article

A glimpse of gluons through deeply virtual compton scattering on the proton

M. Defurne

A. Martí Jiménez-Argüello

Z. Ahmed

H. Albataineh

K. Allada

P. Zhu

+88

The internal structure of nucleons (protons and neutrons) remains one of the greatest outstanding problems in modern nuclear physics. By scattering high-energy electrons off a proton we are able to resolve its fundamental constituents and probe their momenta and positions. Here we investigate the dynamics of quarks and gluons inside nucleons using deeply virtual Compton scattering (DVCS)—a highly virtual photon scatters off the proton, which subsequently radiates a photon. DVCS interferes with the Bethe-Heitler (BH) process, where the photon is emitted by the electron rather than the proton. We report herein the full determination of the BH-DVCS interference by exploiting the distinct energy dependences of the DVCS and BH amplitudes. In the regime where the scattering is expected to occur off a single quark, measurements show an intriguing sensitivity to gluons, the carriers of the strong interaction.

16 November 2017 in Iranian Polymer Journal

Journal Article

Flexible, lead-free, gamma-shielding materials based on natural rubber/metal oxide composites

Donruedee Toyen

Anawat Rittirong

Worawat Poltabtim

Kiadtisak Saenboonruang

About Me

I am an Associate Professor at Kasetsart University, specializing in radiation shielding and radiation processing. My research focuses on using gamma irradiation to enhance material properties, including antifungal activity, biodegradability, and mechanical strength in polymers. My work spans radiation shielding materials and polymer modification, with applications in both industry and sustainability. Notably, my study on chitosan-gamma irradiation synergy in natural rubber films, published in Results in Engineering, demonstrated improved antifungal properties and biodegradability. Additionally, I have developed radiation shielding materials, including polymer-based and heavy metal composites to improve protection against ionizing radiation. My work on bismuth-loaded and lead-free shielding materials offers safer and more environmentally friendly alternatives for radiation protection. Beyond research, I actively mentor students in shielding material development and radiation processing, contributing to the advancement of radiation technology for sustainable materials and improved radiation protection.

Prof. Dr. Kiadtisak Saenboonruang

Prof. Dr. Kiadtisak Saenboonruang

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