Ultra-pure Nickel for Structural Components of Low-Radioactivity Instruments

T. J Roosendaal; C. T Overman; G. S Ortega; T. D Schlieder; N. D Rocco; L. K. S Horkley; K. P Hobbs; K Harouaka; J. L Orrell; P Acharya; A Amy; E Angelico; A Anker; I. J Arnquist; A Atencio; J Bane; V Belov; E. P Bernard; T Bhatta; A Bolotnikov; J Breslin; P. A Breur; J. P Brodsky; E Brown; T Brunner; B Burnell; E Caden; L. Q Cao; D Cesmecioglu; S. A Charlebois; D Chernyak; M Chiu; T Daniels; L Darroch; R DeVoe; M. L di Vacri; M. J Dolinski; B Eckert; M Elbeltagi; A Emara; W Fairbank; B. T Foust; D Gallacher; N Gallice; W Gillis; A Gorham; G Gratta; C. A Hardy; S. C Hedges; M Heffner; E Hein; J. D Holt; A Iverson; A Karelin; I. V Kotov; A Kuchenkov; A Larson; M. B Latif; S Lavoie; K. G Leach; B. G Lenardo; D. S Leonard; K. K. H Leung; H Lewis; X Li; Z Li; C Licciardi; R Lindsay; R MacLellan; S Majidi; C Malbrunot; M. Marquis. J Masbou; M Medina-Peregrina; S Mngonyama; B Mong; D. C Moore; X. E Ngwadla; K Ni; A Nolan; S. C Nowicki; J. C. Nzobadila Ondze; A Odian; L Pagani; H. Peltz Smalley; A Pena-Perez; A Piepke; A Pocar; S Prentice; V Radeka; R Rai; H Rasiwala; D Ray; S Rescia; G Richardson; V Riot; R Ross; P. C Rowson; R Saldanha; S Sangiorgio; S Sekula; T Shetty; L Si; J Soderstrom; F Spadoni; V Stekhanov; X. L Sun; S Thibado; T Totev; S Triambak; R. H. M Tsang; O. A Tyuka; E van Bruggen; M Vidal; M Walent; Y. G Wang; Q. D Wang; M. P Watts; M Wehrfritz; L. J Wen; S Wilde; M Worcester; X. M Wu; H Xu; H. B Yang; L Yang; O Zeldovich

doi:10.48550/arxiv.2508.08230

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Ultra-pure Nickel for Structural Components of Low-Radioactivity Instruments

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Ultra-pure Nickel for Structural Components of Low-Radioactivity Instruments

T. J Roosendaal, C. T Overman, G. S Ortega, T. D Schlieder, N. D Rocco, L. K. S Horkley, K. P Hobbs, K Harouaka, J. L Orrell, P Acharya, …

11 Aug 2025

DOI: https://doi.org/10.48550/arxiv.2508.08230

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Abstract

Physics - Nuclear Experiment

The next generation of rare-event search experiments in nuclear and particle physics demand structural materials combining exceptional mechanical strength with ultra-low levels of radioactive contamination. This study evaluates chemical vapor deposition (CVD) nickel as a candidate structural material for such applications. Manufacturer-supplied CVD Ni grown on aluminum substrates underwent tensile testing before and after welding alongside standard Ni samples. CVD Ni exhibited a planar tensile strength of ~600 MPa, significantly surpassing standard nickel. However, welding and heat treatment were found to reduce the tensile strength to levels comparable to standard Ni, with observed porosity in the welds likely contributing to this reduction. Material assay via inductively coupled plasma mass spectrometry (ICP-MS) employing isotope-dilution produced measured bulk concentration of 232-Th, 238-U, and nat-K at the levels of ~70 ppq, <100 ppq, and ~900 ppt, respectively, which is the lowest reported in nickel. Surface-etch profiling uncovered higher concentrations of these contaminants extending ~10 micrometer beneath the surface, likely associated with the aluminum growth substrate. The results reported are compared to the one other well documented usage of CVD Ni in a low radioactive background physics research experiment and a discussion is provided on how the currently reported results may arise from changes in CVD fabrication or testing process. These results establish CVD Ni as a promising low-radioactivity structural material, while outlining the need for further development in welding and surface cleaning techniques to fully realize its potential in large-scale, low radioactive background rare-event search experiments.

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Title: Ultra-pure Nickel for Structural Components of Low-Radioactivity Instruments
Creators: T. J Roosendaal
C. T Overman
G. S Ortega
T. D Schlieder
N. D Rocco
L. K. S Horkley
K. P Hobbs
K Harouaka
J. L Orrell
P Acharya
A Amy
E Angelico
A Anker
I. J Arnquist
A Atencio
J Bane
V Belov
E. P Bernard
T Bhatta
A Bolotnikov
J Breslin
P. A Breur
J. P Brodsky
E Brown
T Brunner
B Burnell
E Caden
L. Q Cao
D Cesmecioglu
S. A Charlebois
D Chernyak
M Chiu
T Daniels
L Darroch
R DeVoe
M. L di Vacri
M. J Dolinski
B Eckert
M Elbeltagi
A Emara
W Fairbank
B. T Foust
D Gallacher
N Gallice
W Gillis
A Gorham
G Gratta
C. A Hardy
S. C Hedges
M Heffner
E Hein
J. D Holt
A Iverson
A Karelin
I. V Kotov
A Kuchenkov
A Larson
M. B Latif
S Lavoie
K. G Leach
B. G Lenardo
D. S Leonard
K. K. H Leung
H Lewis
X Li
Z Li
C Licciardi
R Lindsay
R MacLellan
S Majidi
C Malbrunot
M. Marquis. J Masbou
M Medina-Peregrina
S Mngonyama
B Mong
D. C Moore
X. E Ngwadla
K Ni
A Nolan
S. C Nowicki
J. C. Nzobadila Ondze
A Odian
L Pagani
H. Peltz Smalley
A Pena-Perez
A Piepke
A Pocar
S Prentice
V Radeka
R Rai
H Rasiwala
D Ray
S Rescia
G Richardson
V Riot
R Ross
P. C Rowson
R Saldanha
S Sangiorgio
S Sekula
T Shetty
L Si
J Soderstrom
F Spadoni
V Stekhanov
X. L Sun
S Thibado
T Totev
S Triambak
R. H. M Tsang
O. A Tyuka
E van Bruggen
M Vidal
M Walent
Y. G Wang
Q. D Wang
M. P Watts
M Wehrfritz
L. J Wen
S Wilde
M Worcester
X. M Wu
H Xu
H. B Yang
L Yang
O Zeldovich
Resource Type: Preprint
Language: English
Academic Unit: Physics
Other Identifier: 991022080221004721

Ultra-pure Nickel for Structural Components of Low-Radioactivity Instruments

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