Compendium of thermal-neutron-capture γ-ray measurements part I Z≤46

Bartholomew, G. A.; Doveika, A.; Eastwood, K.M.; Monaro, S.; Groshev, L.V.; Demidov, A.M.; Pelekhov, V.I.; Sokolovskii, L.L.

doi:10.1016/s0550-306x(67)80014-4

Cited by 175 publications

(19 citation statements)

References 15 publications

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“…A high percentage of neutron captures by Zn 64 result in the emission of ␥-rays of several MeV which, in turn, impart a nuclear recoil in excess of 100 eV to the zinc nuclei. 16 The threshold energy for lattice displacement is not precisely known for ZnSe, but the threshold energies for many other materials is less than this figure. 17 If the 25 eV value given in earlier work 18 for copper is taken as a conservative estimate for the threshold energy for nuclear displacement in ZnSe, it is apparent many Zn 65 nuclei will be displaced from their copper sites in the ZnSe lattice when as-grown ZnSe is neutron irradiated.…”

Section: Discussionmentioning

confidence: 84%

Neutron transmutation doping as an experimental probe for CuZn in ZnSe

Wheeler

Boone

Farmer

et al. 1997

Journal of Applied Physics

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Nuclear transmutation is employed in an investigation of copper doping in ZnSe. Copper atoms are introduced at zinc sites in ZnSe after crystal growth processes are complete. Since the copper dopants are introduced after growth, far from equilibrium, they are less able to form complexes with other dopants or lattice defects as they may do when present during crystal growth. Initial results are consistent with CuZn being involved in the copper red and copper green emissions in ZnSe but not in the I1d exitonic emission.

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Section: Discussionmentioning

confidence: 84%

Neutron transmutation doping as an experimental probe for CuZn in ZnSe

Wheeler

Boone

Farmer

et al. 1997

Journal of Applied Physics

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“…1. The most Compton scattered through angle 8 from a curved intense of these radiations originate (16) from the aluminum plate C has degraded energy E m given, in 8.99 and 8.53 MeV y-rays of 59Ni emitted in the reacmegaelectronvolts, by tion 58Ni(n,y)59Ni. These radiations have at the target the energies E, and E,, respectively, and the Table 1 for nomenclature) lie on a circle, radiations two radiations detected by the NaI(T1) give the pulseof energy En, scattered from all parts of C converge height distribution shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…[SM] is defined by Conversion ratios involving only a single resonance i are independent of the final state j and are given by 16] c,,.' z c,,.,' and D,,,' s D,,,,~' for P, ' z PMi I The procedure followed in the analysis for isotope separation is to calculate the ratios CMMjil and as a function of K,,' and PMil and T i / A and PMil for the M = N, R, and E isotope mixtures listed in Table 2 Fig.…”

Section: Dipole Strength Distributionmentioning

confidence: 99%

The resonant scattering of gamma radiation from lead isotopes

Knowles¹,

Khan²,

Mills³

1978

Can. J. Phys.

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The scattering of gamma radiation from different isotopic mixtures of lead has been measured between 4.7 and 8.3 MeV with a variable energy beam with 175 keV resolution obtained by Compton scattering (n,γ) radiation of nickel from a curved aluminum plate. The elastically scattered radiation was detected with a 12.5 cm diameter, 12.5 cm long NaI(Tl) and with 27 or 49 cm3 Ge(Li) detectors located at scattering angles of 135° and 90°, respectively. Relative scattering measurements from targets of natural lead, radio-lead, and lead enriched in 208Pb show that the most prominent peaks of natural lead are in 208Pb at 7332.6 ± 1.3, 7087.7 ± 4.6, 7064.4 ± 3.5, 6721.0 ± 1.8, 5507.6 ± 1.8, 5292.6 ± 3.3, 4836.5 ± 4.6 keV. Measurements of resonant scattering and resonant self-absorption of the more intense scattered radiations provide information on level widths.

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“…Since reactor power was lowered from 1 MW to 400 kW or 250 kW for some of the instrument irradiations, an ionization chamber was used to normalize extrapolation-chamber results. Bartholomew, et al, 1967 Results for survey instrument irradiations are given in Tables 6 and 7. Even though the roentgen is not recommended for use above 3 MeV, instrument results are left in units of exposure because the conversion from roentgen to rem is not supported by standards (ICRU 14 1969) at the higher energies.…”

Section: Instrument Response To High-energy Photonsmentioning

confidence: 99%