ENTRY L0267 20210126 L045L026700000001 SUBENT L0267001 20210126 L045L026700100001 BIB 11 38 L026700100002 TITLE Reaction-yield dependence of the (gamma,gamma') L026700100003 reaction of 238U on the target thickness L026700100004 AUTHOR (H.Negm,H.Ohgaki,I.Daito,T.Hayakawa,H.Zen,T.Kii, L026700100005 K.Masuda, T.Hori,R.Hajima,T.Shizuma,N.Kikuzawa) L026700100006 REFERENCE (J,NST,52,811,2015) L026700100007 #doi:10.1080/00223131.2014.980348 L026700100008 INSTITUTE (2JPNKTO,2JPNJAE) L026700100009 (3EGYEGY) Physics Department, Faculty of Science, L026700100010 Assiut University, Assiut 71516, Egypt L026700100011 FACILITY (SYNCH,1USADKE) High Intensity gamma-ray Source L026700100012 facility. L026700100013 INC-SOURCE (LCS) A laser Compton back-scattering (LCS). The LCS L026700100014 gamma-beam was generated with almost 100% circularly L026700100015 polarized photons with an energy of 2.475 MeV and an L026700100016 average flux of approximately 3x10**5 gamma/s/keV. L026700100017 DETECTOR (HPGE) High-purity Germanium (HPGe) detector array. L026700100018 SAMPLE Four different thicknesses of 238U, namely 1.287, L026700100019 2.703, 4.117 and 5.563 mm consisted of 2, 4, 6 and 8 L026700100020 foils, respectively. Eight disks of depleted uranium L026700100021 (DU), which has a density of 19.1 g cm-3. Each disk L026700100022 of DU is 25.4mm in diameter and approximately 0.6 mm L026700100023 in thickness with a mass of approximately 6.5 g, and L026700100024 each disk is encased within a thin plastic sealant. L026700100025 METHOD (GSPEC) The HIgammaS facility is based on the Compton L026700100026 backscattering of free electron-laser (FEL) photons L026700100027 with electrons stored in the storage ring. Nuclear L026700100028 Resonance Fluorescence (NRF): The scattering NRF L026700100029 gamma-ray spectra were collected with an HPGe L026700100030 detector array with a total hours on-beam of LCS L026700100031 gamma-ray source of 32.5 h. This work is based on the L026700100032 atomic and nuclear absorption of the incident and/or L026700100033 scattered NRF gamma-rays. L026700100034 ERR-ANALYS (DATA-ERR) Mostly statistical uncertainties. L026700100035 Attenuation factors helped to avoid many systematic L026700100036 errors that occur in the NRF experiments, such as the L026700100037 flux measurements and the detector detection L026700100038 efficiency. L026700100039 HISTORY (20210126C) BP L026700100040 ENDBIB 38 0 L026700100041 NOCOMMON 0 0 L026700100042 ENDSUBENT 41 0 L026700199999 SUBENT L0267002 20210126 L045L026700200001 BIB 3 13 L026700200002 REACTION (92-U-238(G,EL),,ARE) L026700200003 METHOD Saturation curve (New method). The total attenuation L026700200004 factor of the resonant and non-resonant gamma-ray L026700200005 energies on a direct NRF measurement (without an L026700200006 absorber target/material) of the resonant states of L026700200007 the isotope of interest (IOI) provides a new method L026700200008 to extract the absolute values of the integrated NRF L026700200009 cross section. The total attenuation factor can be L026700200010 deduced from a fitting function of the experimental L026700200011 saturation curve of the NRF yield against the target L026700200012 thickness. L026700200013 STATUS (TABLE) Table 2, page 818. L026700200014 (COREL,L0267003) Data from absolute measurement L026700200015 ENDBIB 13 0 L026700200016 NOCOMMON 0 0 L026700200017 DATA 3 11 L026700200018 EN-RES DATA DATA-ERR L026700200019 MEV B*EV B*EV L026700200020 2.365 54.1 4.4 L026700200021 2.410 45.6 3.1 L026700200022 2.423 34.0 2.8 L026700200023 2.442 4.9 2.1 L026700200024 2.454 40.8 3.4 L026700200025 2.468 51.4 3.3 L026700200026 2.472 12.8 2.7 L026700200027 2.492 8.2 2.5 L026700200028 2.499 46.8 3.3 L026700200029 2.511 4.3 1.7 L026700200030 2.529 11.6 2.7 L026700200031 ENDDATA 13 0 L026700200032 ENDSUBENT 31 0 L026700299999 SUBENT L0267003 20210126 L045L026700300001 BIB 3 4 L026700300002 REACTION (92-U-238(G,EL),,ARE) L026700300003 METHOD Absolute measurement (Common method). L026700300004 STATUS (TABLE) Table 2, page 818. L026700300005 (COREL,L0267002) Data from saturation curve method L026700300006 ENDBIB 4 0 L026700300007 NOCOMMON 0 0 L026700300008 DATA 3 11 L026700300009 EN-RES DATA DATA-ERR L026700300010 MEV B*EV B*EV L026700300011 2.365 44.1 4.9 L026700300012 2.410 37.1 3.9 L026700300013 2.423 33.0 3.5 L026700300014 2.442 3.9 1.9 L026700300015 2.454 38.5 3.8 L026700300016 2.468 47.4 4.3 L026700300017 2.472 10.1 2.9 L026700300018 2.492 7.5 2.7 L026700300019 2.499 45.5 4.1 L026700300020 2.511 4.1 1.9 L026700300021 2.529 9.5 2.7 L026700300022 ENDDATA 13 0 L026700300023 ENDSUBENT 22 0 L026700399999 ENDENTRY 3 0 L026799999999