A novel activation technique for integrated cross section measurements using accelerator mass spectrometry

Austin D. Nelson; Adam M. Clark; Thomas L. Bailey; Lauren K. Callahan; Philippe Collon

doi:10.1016/j.nimb.2022.10.016

A novel activation technique for integrated cross section measurements using accelerator mass spectrometry

Austin D. Nelson
, Adam M. Clark
, Thomas L. Bailey
, Lauren K. Callahan
, Philippe Collon

Accelerator Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

⁴¹Ca (t_1/2 = 9.94 × 10⁴ yrs) is an important stellar radionuclide and its production in the Early Solar System from various irradiation scenarios can help determine the viability of models of early stellar processes. A novel reaction technique has been under development and recently tested at the Nuclear Science Laboratory at the University of Notre Dame. This technique utilizes an “in-cathode” reaction method, where natural CaF₂ material is packed into an ion source sample holder (cathode) and then irradiated and subsequently measured using Accelerator Mass Spectrometry (AMS) without the need for chemical processing afterward. The setup for the irradiation was performed using a ³He beam to measure the reaction ^natCa(³He,x)⁴¹Ca. Initial AMS results suggest additional complexity due to ion source sputtering rates and geometry, which will need to be explored further.

Original language	English
Pages (from-to)	50-55
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	533
DOIs	https://doi.org/10.1016/j.nimb.2022.10.016
State	Published - Dec 15 2022

Funding

We would like to thank George Jackson at PRIME Lab for supplying us with all the AMS standard materials used for measurements. We would also like to thank Jerry Lingle of the NSL for helping design and machine all the required pieces for the new cathode holders and the many ND graduate students who sat shift on the FN for experiments. This work is supported by the National Science Foundation under Grant No. PHY-2011890 and the Nuclear Regulatory Commission award number 31310019 M0037.

Keywords

41Ca
AMS
Early solar system
In-cathode activation

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10.1016/j.nimb.2022.10.016

Cite this

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title = "A novel activation technique for integrated cross section measurements using accelerator mass spectrometry",

abstract = "41Ca (t1/2 = 9.94 {\texttimes} 104 yrs) is an important stellar radionuclide and its production in the Early Solar System from various irradiation scenarios can help determine the viability of models of early stellar processes. A novel reaction technique has been under development and recently tested at the Nuclear Science Laboratory at the University of Notre Dame. This technique utilizes an {\textquotedblleft}in-cathode{\textquotedblright} reaction method, where natural CaF2 material is packed into an ion source sample holder (cathode) and then irradiated and subsequently measured using Accelerator Mass Spectrometry (AMS) without the need for chemical processing afterward. The setup for the irradiation was performed using a 3He beam to measure the reaction natCa(3He,x)41Ca. Initial AMS results suggest additional complexity due to ion source sputtering rates and geometry, which will need to be explored further.",

keywords = "41Ca, AMS, Early solar system, In-cathode activation",

author = "Nelson, \{Austin D.\} and Clark, \{Adam M.\} and Bailey, \{Thomas L.\} and Callahan, \{Lauren K.\} and Philippe Collon",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = dec,

day = "15",

doi = "10.1016/j.nimb.2022.10.016",

language = "English",

volume = "533",

pages = "50--55",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

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A novel activation technique for integrated cross section measurements using accelerator mass spectrometry. / Nelson, Austin D.; Clark, Adam M.; Bailey, Thomas L. et al.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 533, 15.12.2022, p. 50-55.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - A novel activation technique for integrated cross section measurements using accelerator mass spectrometry

AU - Nelson, Austin D.

AU - Clark, Adam M.

AU - Bailey, Thomas L.

AU - Callahan, Lauren K.

AU - Collon, Philippe

PY - 2022/12/15

Y1 - 2022/12/15

N2 - 41Ca (t1/2 = 9.94 × 104 yrs) is an important stellar radionuclide and its production in the Early Solar System from various irradiation scenarios can help determine the viability of models of early stellar processes. A novel reaction technique has been under development and recently tested at the Nuclear Science Laboratory at the University of Notre Dame. This technique utilizes an “in-cathode” reaction method, where natural CaF2 material is packed into an ion source sample holder (cathode) and then irradiated and subsequently measured using Accelerator Mass Spectrometry (AMS) without the need for chemical processing afterward. The setup for the irradiation was performed using a 3He beam to measure the reaction natCa(3He,x)41Ca. Initial AMS results suggest additional complexity due to ion source sputtering rates and geometry, which will need to be explored further.

AB - 41Ca (t1/2 = 9.94 × 104 yrs) is an important stellar radionuclide and its production in the Early Solar System from various irradiation scenarios can help determine the viability of models of early stellar processes. A novel reaction technique has been under development and recently tested at the Nuclear Science Laboratory at the University of Notre Dame. This technique utilizes an “in-cathode” reaction method, where natural CaF2 material is packed into an ion source sample holder (cathode) and then irradiated and subsequently measured using Accelerator Mass Spectrometry (AMS) without the need for chemical processing afterward. The setup for the irradiation was performed using a 3He beam to measure the reaction natCa(3He,x)41Ca. Initial AMS results suggest additional complexity due to ion source sputtering rates and geometry, which will need to be explored further.

KW - 41Ca

KW - AMS

KW - Early solar system

KW - In-cathode activation

UR - https://www.scopus.com/pages/publications/85141428523

U2 - 10.1016/j.nimb.2022.10.016

DO - 10.1016/j.nimb.2022.10.016

M3 - Article

AN - SCOPUS:85141428523

SN - 0168-583X

VL - 533

SP - 50

EP - 55

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

A novel activation technique for integrated cross section measurements using accelerator mass spectrometry

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Keywords

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