Measurement of isomeric yield ratios for the 44m,gSc isomeric pairs produced from 45Sc and natTi targets at 50-, 60-, and 70-MeV bremsstrahlung

Do, Nguyen Van; Khue, Pham Duc; Thanh, Kim Tien; Tran, N. H.; Rahman, Md. Shakilur; Kim, Kyung-Sook; Lee, Manwoo; Kim, Gui Nyun; Lee, Hee‐Seock; Cho, Moo‐Hyun; Ko, In Soo; Namkung, W.

doi:10.1007/s10967-010-0831-y

Cited by 20 publications

(3 citation statements)

References 29 publications

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“…After measurements, photopeak area analysis and making the necessary corrections such as counting losses due to the γ-ray self-absorption, the coincidence summing of cascade γ-rays and the variation of bremsstrahlung intensity during the irradiation [23][24][25][26], the isomeric yield ratio for the 122m,g Sb isomeric pair was then calculated using the Eq. (5).…”

Section: Discussionmentioning

confidence: 99%

Measurement of the Yield Ratio of the \(^{122m,g}\text{Sb}\) Isomeric Pair Above the Giant Resonance

Khue¹,

Thanh²,

Do³

2012

Comm. in Phys.

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The yield ratio of the high-spin state of \(^{122m}\text{Sb} (8^{ - })\) and the low-spin state of \(^{122g}\text{Sb} (2^{-})\) formed via the \(^{123}\text{Sb}(\gamma, n)^{122m,g}\text{Sb}\) reaction has been measured as a function of the bremsstrahlung end-point energy in the range of 40-MeV to 60-MeV. Use was made of the activation technique in combination with high-resolution \(\gamma\)-ray spectrometry. The isomeric yield ratios for the \(^{123}\text{Sb}(\gamma,n)^{122m,g}\text{Sb}\) reaction measured at 40-, 45-, 50-, 55-, and 60-MeV bremsstrahlung are \(0.341\pm 0.022\), \(0.362 \pm 0.020\), \(0.374 \pm 0.021\), \(0.371 \pm 0.021\), and \( 0.367 \pm 0.022\). According to our knowledge, the present results are the first measurement.

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Section: Discussionmentioning

confidence: 99%

Measurement of the Yield Ratio of the \(^{122m,g}\text{Sb}\) Isomeric Pair Above the Giant Resonance

Khue¹,

Thanh²,

Do³

2012

Comm. in Phys.

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“…The detection efficiency of the detector at 1332.5 keV is 20% relative to that of the 76 mm × 76 mm NaI(Tl) detector. The efficiency of the detector was calibrated at different distances from the detector surface using standard γ-sources as described elsewhere [23].…”

Section: Activity Measurementmentioning

confidence: 99%

Measurement of the flux-weighted average cross section for the \(^{186}\)W\((\gamma,p)^{185}\)Ta reaction at the bremsstrahlung end-point energy of 70 MeV

Do,

Tran,

Kim

et al. 2023

Comm. Phys.

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Abstract. The flux-weighted average cross section for the 186W(γ,p)185Ta reaction induced with 70 MeV bremsstrahlung end-point energy was measured using the activation method in combination with off-line gamma activity measurement. The 27Al(γ,2pn)24Na monitor reaction was used for the determination of the bremsstrahlung flux. The bremsstrahlung photons used to produce the photonuclear reactions were generated from a thin tungsten (W) converter by bombardment with a 70 MeV electron beam. The experimental flux-weighted average cross section is compared with the theoretical prediction, for which the absolute cross section was calculated using the TALYS 1.95 code and the bremsstrahlung spectrum was simulated using the computer program MCNPX. The present experiment was carried out at the 100 MeV electron linac of the Pohang Accelerator Laboratory, POSTECH, Pohang, Korea.

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“…The detector is coupled to a computer-based multichannel analyzer card system, which could determine the photopeak area of the γ-spectrum by using the software Genie 2000. The counting efficiency of the detector was determined using the standard γ-sources [14,15].…”

Section: Ii2 Activity Measurementmentioning

confidence: 99%

Study of Multiple Photoneutron Reactions on 197Au Induced by 2.5 GeV Bremsstrahlung

Hiền¹,

Khue²,

Thanh³

et al. 2013

Comm. in Phys.

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We identified eight radionuclides \(^{196}\)Au, \(^{195}\)Au, \(^{194}\)Au, \(^{193}\)Au, \(^{192}\)Au, \(^{191}\)Au, \(^{190}\)Au, \(^{189}\)Au formed via the multiple photoneutron reactions \(^{197}\)Au\((\gamma ,kn)^{197 - k}\)Au with 2.5 GeV\break bremsstrahlung. The yields of radionuclides that decay by emitting \(\gamma \)-ray were measured using high purity germanium (HPGe) detector coupled to a PC-based multichannel analyzer. In order to improve the accuracy of the experimental results the necessary corrections were made. The obtained results are compared with reference data and the variations of the \(^{197}\)Au(\(\gamma \),kn)\(^{197 - k}\)Au reaction yields according to incident bremsstrahlung energy and neutron multiplicity are also discussed.

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Measurement of isomeric yield ratios for the 44m,gSc isomeric pairs produced from 45Sc and natTi targets at 50-, 60-, and 70-MeV bremsstrahlung

Cited by 20 publications

References 29 publications

Measurement of the Yield Ratio of the \(^{122m,g}\text{Sb}\) Isomeric Pair Above the Giant Resonance

Measurement of the Yield Ratio of the \(^{122m,g}\text{Sb}\) Isomeric Pair Above the Giant Resonance

Measurement of the flux-weighted average cross section for the \(^{186}\)W\((\gamma,p)^{185}\)Ta reaction at the bremsstrahlung end-point energy of 70 MeV

Study of Multiple Photoneutron Reactions on 197Au Induced by 2.5 GeV Bremsstrahlung

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