THE BETA DECAY OF Cs134

1964 ◽  
Vol 42 (3) ◽  
pp. 504-518 ◽  
Author(s):  
W. Van Wijngaarden ◽  
R. D. Connor
Keyword(s):  
Beta Decay ◽  
Level Scheme ◽  
Magnetic Spectrometer ◽  
Β Decay ◽  
Good Balance ◽  
End Point ◽  
Intermediate Energies ◽  
Upper Limits ◽  
Γ Ray

Magnetic spectrometer studies have revealed that the β decay of Cs134 proceeds via three partial spectra whose end-point energies, intensities, and log10ft values are as follows:[Formula: see text]No evidence is found for β transitions of intermediate energies. Upper limits have been placed on two previously reported β transitions of higher energy as follows:[Formula: see text]These β intensities to a revised level scheme produce a good balance with the γ-ray intensities depopulating the levels.The Qβ− value is 2.059 Mev.

scholarly journals Strong γ-ray emission from neutron unbound states populated in β-decay: Impact on (n,γ) cross-section estimates

2017 ◽  
Vol 146 ◽  
pp. 01002 ◽  
Author(s):  
J.L. Tain ◽  
V. Guadilla ◽  
E. Valencia ◽  
A. Algora ◽  
A.-A. Zakari-Issoufou ◽  
...  
Keyword(s):  
Cross Section ◽  
Β Decay ◽  
Unbound States ◽  
Γ Ray

Measurements of X- and γ-ray emission probabilities in the β− decay of 233Pa

2010 ◽  
Vol 68 (12) ◽  
pp. 2382-2386 ◽  
Author(s):  
F.G. Kondev ◽  
I. Ahmad ◽  
J.P. Greene ◽  
M.A. Kellett ◽  
A.L. Nichols
Keyword(s):  
Β Decay ◽  
Γ Ray

scholarly journals Gamma Ray Decay Schemes of Levels at Intermediate Energies in 32S

1973 ◽  
Vol 26 (1) ◽  
pp. 17 ◽  
Author(s):  
CE Moss ◽  
RH Spear ◽  
F Ahmad ◽  
AM Baxter ◽  
LE Carlson ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Magnetic Spectrometer ◽  
Excitation Energies ◽  
Intermediate Energies ◽  
Double Focusing

The reaction 32S(p,p'y)32S has been studied with a 12'7 cm by 10�2 cm NaI(TI) y-ray detector in conjunction with a 61 cm double-focusing magnetic spectrometer to determine the y-ray decay schemes of all known levels in 32S between the excitation energies of 5�40 and 7� 15 MeV.

scholarly journals CROSS-SECTIONS FOR PHOTONUCLEAR REACTIONS 93Nb(γ,n)92mNb AND 93Nb(γ,n)92tNb IN THE END-POINT BREMSSTRAHLUNG ENERGIES 36...91 MeV

2020 ◽  
pp. 148-153
Author(s):  
A.N. Vodin ◽  
O.S. Deiev ◽  
I.S. Timchenko ◽  
S.N. Olejnik ◽  
A.S. Kachan ◽  
...  
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Maximum Energy ◽  
Reaction Cross ◽  
Bremsstrahlung Spectrum ◽  
Photonuclear Reactions ◽  
End Point ◽  
Γ Ray ◽  
First Time ◽  
Good Agreement

The flux-weighted averaged over the energy range of bremsstrahlung spectrum from reaction threshold up to the maximum energy of γ-ray cross-sections <σ(E)> of the 93Nb(γ,n)92mNb and 93Nb(γ,n)92tNb photonuclear reactions were determined by the gamma-activation method within the end-point bremsstrahlung energies Еmax = 36…91 MeV. Activation of 93Nb targets has been done by a bremsstrahlung flux using an electron beam at the linear accelerator LUE-40 at RDC "Accelerator" NSC KIPT. The γ-ray spectra of irradiated targets were registered using the HPGe detector with an energy resolution of 1.8 keV for the 1332 keV line 60Co. To control the bremsstrahlung flux we used natMo witness-targets and a reaction cross-section of 100Mo(γ,n)99Mo. Obtained experimental cross-sections <σ(E)> of the studied reactions are in good agreement with the theoretical values calculated within TALYS 1.9 code and the results of other authors. The averaged cross-sections <σ(E)> of the 93Nb(γ,n)92mNb and 93Nb(γ,n)92tNb reactions in the energy range 35...45 MeV and > 70 MeV were obtained for the first time.

K-shell autoionization in the beta decay of 95Nb

1976 ◽  
Vol 54 (20) ◽  
pp. 2024-2027 ◽  
Author(s):  
M. Jurčević ◽  
A. Ljubičić ◽  
Z. Krečak ◽  
K. Ilakovac
Keyword(s):  
Theoretical Result ◽  
Beta Decay ◽  
Coincidence Method ◽  
X Ray ◽  
A Value ◽  
Γ Ray ◽  
Recent Theoretical Result

The X-ray–γ-ray coincidence method was applied to determine the probability of K-shell autoionization in the beta decay of 95Nb. A value of PK = (3.4 ± 0.4) × 10−4 was obtained. This result is in agreement with the recent theoretical result obtained by Law and Campbell.

AGILE Observations of GW Events

2017 ◽  
Vol 13 (S338) ◽  
pp. 84-89
Author(s):  
Francesco Verrecchia ◽  
Marco Tavani ◽  
Immacolata Donnarumma
Keyword(s):  
Space Mission ◽  
Test Case ◽  
X Ray ◽  
Event Time ◽  
Space Agency ◽  
Upper Limits ◽  
Major Player ◽  
Detection Capabilities ◽  
Γ Ray ◽  
Italian Space Agency

AbstractAGILE is a space mission of the Italian Space Agency dedicated to γ-ray astrophysics, launched in 2007. AGILE performed dedicated real-time searches for possible γ-ray counterparts of gravitational wave (GW) events detected by the LIGO-Virgo scientific Collaboration (LVC) during the O2 observation run. We present a review of AGILE observations of GW events, starting with the first, GW150914, which was a test case for future searches. We focus here on the main characteristics of the observations of the most important GW events detected in 2017, i.e. GW170104 and GW170817. In particular, for the former event we published γ-ray upper limits (ULs) in the 50 MeV – 10 GeV energy band together with a detailed analysis of a candidate precursor event in the Mini-Calorimeter data. As for GW170817, we published a set of constraining γ-ray ULs obtained for integrations preceding and following the event time. These results allow us to establish important constraints on the γ-ray emission from a possible magnetar-like remnant in the first ~1000 s following T0. AGILE is a major player in the search of electromagnetic counterparts of GW events, and its enhanced detection capabilities in hard X-ray/MeV/GeV ranges will play a crucial role in the future O3 observing run.

Decay of 97Zr and its daughter 97Nb

1970 ◽  
Vol 48 (11) ◽  
pp. 1378-1385 ◽  
Author(s):  
B. Arad ◽  
W. V. Prestwich ◽  
A. M. Lopez ◽  
K. Fritze
Keyword(s):  
Level Scheme ◽  
Β Decay

The energies of the gamma lines following the β decay of the 17 h 97Zr isotope and its 72 min daughter were precisely measured. With these results, the level scheme of 97Nb, as derived by Siivola and Graeffe, was essentially confirmed except for minor changes and more refined energies. The level scheme of 97Mo as derived by Graeffe and Siivola was modified and a few level spin and parity assignments were tentatively made.

scholarly journals γ -ray spectroscopy of Sm150 through the β decay of Pm150 ( T=2.7 h) and Eum150 ( T=12.8 h)

2018 ◽  
Vol 98 (3) ◽  
Author(s):  
P. Schmelzenbach ◽  
K. S. Krane ◽  
J. L. Wood ◽  
W. D. Kulp ◽  
J. Loats ◽  
...  
Keyword(s):  
Β Decay ◽  
Γ Ray

scholarly journals Results from the Cuore Experiment †

Universe ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 10 ◽  
Author(s):  
Alessio Caminata ◽  
Douglas Adams ◽  
Chris Alduino ◽  
Krystal Alfonso ◽  
Frank Avignone ◽  
...  
Keyword(s):  
Beta Decay ◽  
Energy Resolution ◽  
Half Life ◽  
Precise Measurement ◽  
Region Of Interest ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Effective Energy ◽  
Β Decay ◽  
Compact Structure

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double beta decay that has been able to reach the 1-ton scale. The detector consists of an array of 988 TeO 2 crystals arranged in a cylindrical compact structure of 19 towers, each of them made of 52 crystals. The construction of the experiment was completed in August 2016 and the data taking started in spring 2017 after a period of commissioning and tests. In this work we present the neutrinoless double beta decay results of CUORE from examining a total TeO 2 exposure of 86.3 kg yr , characterized by an effective energy resolution of 7.7 keV FWHM and a background in the region of interest of 0.014 counts / ( keV kg yr ) . In this physics run, CUORE placed a lower limit on the decay half-life of neutrinoless double beta decay of 130 Te > 1.3 · 10 25 yr (90% C.L.). Moreover, an analysis of the background of the experiment is presented as well as the measurement of the 130 Te 2 ν β β decay with a resulting half-life of T 1 / 2 2 ν = [ 7.9 ± 0.1 ( stat . ) ± 0.2 ( syst . ) ] × 10 20 yr which is the most precise measurement of the half-life and compatible with previous results.

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